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Thread: SURVEY - Liquid FC Dosing

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    needsajet's Avatar
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    SURVEY - Liquid FC Dosing

    I know everyone’s situation is different, but if you’re willing, please tell us how you use your liquid chlorine dosing system.

    1. Which liquid chlorine dosing system do you use? (Stenner, other dosing pump, or Liquidator, etc.?)
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? (drop-based, sensor, sensor and dial it in, etc.)
    3. What is your current pump run time? (hours per day)
    4. What is the run time of your liquid chlorine doser? (minutes or hours per day)
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? (spread out, or all at once)
    6. Do you inject chlorine during the day, at night or both? (day, night, both)
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? e.g. 3 ppm FC min at 40 ppm CYA. (Yes or No, comments also welcome)
    8. If yes, have you experienced any algae outbreaks while using the lower minimum?

    Just copy and paste to answer (example below) and thank you for helping out if you can
    12k IG salt; glass beads in plaster; K-2006C, K-1766, CCL, and Aussie 4in1 (HTH); Pentair Eco800 1.2HP VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; prior pool AG 10k | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

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    needsajet's Avatar
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    Re: SURVEY - Liquid FC Dosing

    Example answer:

    1. Which liquid chlorine dosing system do you use? (Stenner
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? (drop-based, dial it in
    3. What is your current pump run time? (10 hours per day)
    4. What is the run time of your liquid chlorine doser? (30 minutes per day)
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? (spread out with two doses
    6. Do you inject chlorine during the day, at night or both? (day
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? (for example 3 ppm FC minimum at 40 ppm CYA) (No
    8. If yes, have you experienced any algae outbreaks while using the lower minimum?
    12k IG salt; glass beads in plaster; K-2006C, K-1766, CCL, and Aussie 4in1 (HTH); Pentair Eco800 1.2HP VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; prior pool AG 10k | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

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    RonsPlc's Avatar
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    Re: SURVEY - Liquid FC Dosing

    1. Which liquid chlorine dosing system do you use? (Stenner
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? (drop-based, dial it in
    3. What is your current pump run time? 24/7 on low
    4. What is the run time of your liquid chlorine doser? (84 minutes per day)
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? (spread out with fourteen doses)
    6. Do you inject chlorine during the day, at night or both? (day
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? (for example 3 ppm FC minimum at 40 ppm CYA) (No
    8. If yes, have you experienced any algae outbreaks while using the lower minimum?
    14600 gal Intex 24' Round 52" deep AG Pool (Heavily Modified)
    200lb sand filter w/2 speed 1.5/0.5hp pump
    Stenner 45MHP10 Liquid Chlorine (well... bleach) Injector. Borates added.
    K-2006 test kit w/Speedstir
    Pool School - PoolMath - HIGHLY Recommended Test Kits

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    Re: SURVEY - Liquid FC Dosing

    1. Which liquid chlorine dosing system do you use? (Stenner)
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? (drop-based, dial it in)
    3. What is your current pump run time? (7 hours per day at 2000 rpm/~40gpm)
    4. What is the run time of your liquid chlorine doser? (75 minutes per day)
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? (spread out with three doses - 8am, 3pm, 6pm)
    6. Do you inject chlorine during the day, at night or both? (day)
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? (for example 3 ppm FC minimum at 40 ppm CYA) (No)
    8. If yes, have you experienced any algae outbreaks while using the lower minimum?
    Graeme // 15k gal 29x15 geometric IG w/750 gal spa, Wet Edge Northshore Tahoe, travertine coping and decking, Clean & Clear Plus 420 sq ft cartridge filter, Intelliflo VS pump, 1hp water feature pump, Easytouch 8 w/wireless handheld, Racer pool cleaner, 400,000 BTU Max-E-Therm heater, Stenner 45MPHP10 w/15 gal tank, Intellibrite 5G LED lighting, bubblers, pencil jets, TF-100 w/SpeedStir, Borates & Salt. Finished and filled June 2015!

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    Re: SURVEY - Liquid FC Dosing

    1. Which liquid chlorine dosing system do you use? Stenner
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? drop-based, dial it in
    3. What is your current pump run time? 6 hours
    4. What is the run time of your liquid chlorine doser? 6 hours
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? Anytim pump is running
    6. Do you inject chlorine during the day, at night or both? day
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? (for example 3 ppm FC minimum at 40 ppm CYA) No
    8. If yes, have you experienced any algae outbreaks while using the lower minimum?
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: SURVEY - Liquid FC Dosing

    1. Which liquid chlorine dosing system do you use? Liquidator
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? drop-based, dial it in
    3. What is your current pump run time? (hours per day) 9
    4. What is the run time of your liquid chlorine doser? (minutes or hours per day) 9
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? (spread out, or all at once) when pump runs
    6. Do you inject chlorine during the day, at night or both? (day, night, both) both
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? e.g. 3 ppm FC min at 40 ppm CYA. (Yes or No, comments also welcome) no
    8. If yes, have you experienced any algae outbreaks while using the lower minimum? no algae ever
    30,000 gal free-form IG w/ spa, PebbleSheen Blue Surf, Pentair cartridge filter, Pentair 3 HP Intelliflo, extra pump that is way over-sized for weeping moss rocks, Dolphin Oasis Z5, municipal water, all built Jan-Feb 2016. TF-100, SpeedStir, Liquidator 3/8", borates. My build thread http://www.troublefreepool.com/threa...-in-Cypress-TX

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    Re: SURVEY - Liquid FC Dosing

    1. Which liquid chlorine dosing system do you use? (Stenner
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? (drop-based,
    3. What is your current pump run time? (8 hours per day)
    4. What is the run time of your liquid chlorine doser? (50 minutes
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? (all at once)
    6. Do you inject chlorine during the day, at night or both? (day
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? e.g. 3 ppm FC min at 40 ppm CYA. (No I try to stay closer to 10%
    8. If yes, have you experienced any algae outbreaks while using the lower minimum?

    Going on my third year with the stenner pump. Only maintance is replacing the pump tube every year.
    Screen enclosed 17K gal 16x30 IG with Diamond Brite finish, elevated 4 jet spa with spill over, Twin dolphin fountain, Hayward Ecostar pump[ Pentair intelliflo VS, Filter Sta rite Posi-Flo PTM 100, Aqua Cal heat pump, Tiger Shark QC robotic cleaner.
    Stenner peristaltic pump model 45MPHP10, 15 gal storage tank. TF 100 with Speed Stir.

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    needsajet's Avatar
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    Re: SURVEY - Liquid FC Dosing

    Thanks much for the responses so far. If you know anyone else with chlorinating liquid dosing, please invite them
    12k IG salt; glass beads in plaster; K-2006C, K-1766, CCL, and Aussie 4in1 (HTH); Pentair Eco800 1.2HP VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; prior pool AG 10k | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

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    Re: SURVEY - Liquid FC Dosing

    1. Which liquid chlorine dosing system do you use? Manual
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? drop-based every other day during hot weather, weekly in the winter
    3. What is your current pump run time? (hours per day) nightly 12hrs 10pm-10am at 800 rpm
    4. What is the run time of your liquid chlorine doser? (minutes or hours per day) 3 minutes
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? all at once when pump runs at max
    6. Do you inject chlorine during the day, at night or both? late evening
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? e.g. 3 ppm FC min at 40 ppm CYA. I let it float between 8% and 10%, I dose no more often than once every other day, after the test.
    8. If yes, have you experienced any algae outbreaks while using the lower minimum? no, small patches about 1" size in low circulation spots from time to time, easily brushed, overnight FC loss is 0.
    44k plaster pool, Pentair 011018 pump, DE6020 filter, LED lights, K2006 test kit

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    Re: SURVEY - Liquid FC Dosing

    1. Which liquid chlorine dosing system do you use? (Stenner
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? (drop-based, dial it in
    3. What is your current pump run time? (5 hours per day)
    4. What is the run time of your liquid chlorine doser? (22 minutes per day)
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? (spread out with two doses
    6. Do you inject chlorine during the day, at night or both? (day
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? (for example 3 ppm FC minimum at 40 ppm CYA) (No -I target 5 for CYA 40
    8. If yes, have you experienced any algae outbreaks while using the lower minimum? NA
    20000 gallon vinyl liner in ground pool
    16' X 34' rectangular diving pool
    Hayward Pro Grid DE Filter
    Hayward 1 hp Super Pump
    TF-100 Test Kit Stenner 45MPHP10

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    needsajet's Avatar
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    Re: SURVEY - Liquid FC Dosing

    hahaha, max2k, sounds like you're feeling a little automated these days
    12k IG salt; glass beads in plaster; K-2006C, K-1766, CCL, and Aussie 4in1 (HTH); Pentair Eco800 1.2HP VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; prior pool AG 10k | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

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    Re: SURVEY - Liquid FC Dosing

    1. Which liquid chlorine dosing system do you use? (Stenner)
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? (drop-based)
    3. What is your current pump run time? (9AM-9PM at 1100RPM, 2600RPM w/solar on)
    4. What is the run time of your liquid chlorine doser? (33 minutes/day)
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? (noon, 3PM, 6PM)
    6. Do you inject chlorine during the day, at night or both? (day)
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? e.g. 3 ppm FC min at 40 ppm CYA. (No, 5-6 ppm FC)
    8. If yes, have you experienced any algae outbreaks while using the lower minimum? NA
    20x35 in-ground oval. Wet Edge Luna Quartz finish. Hayes Super Pump with AO Smith V-Green 165 VS motor. Polaris 380. Enersol solar heating with automatic controller. Automated chlorination with Stenner pump.

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    Re: SURVEY - Liquid FC Dosing

    Quote Originally Posted by needsajet View Post
    hahaha, max2k, sounds like you're feeling a little automated these days
    wait until I get SWG going... I guess I took a wrong survey this time
    44k plaster pool, Pentair 011018 pump, DE6020 filter, LED lights, K2006 test kit

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    Re: SURVEY - Liquid FC Dosing

    1. Which liquid chlorine dosing system do you use? (custom peristaltic pump based)
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? (drop-based, dial it in)
    3. What is your current pump run time? (6 hrs)
    4. What is the run time of your liquid chlorine doser? (small doses every 15 min)
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? (spread out)
    6. Do you inject chlorine during the day, at night or both? (day, 10am - 4pm)
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? e.g. 3 ppm FC min at 40 ppm CYA. (target 4 ppm FC @ 40 ppm CYA)
    8. If yes, have you experienced any algae outbreaks while using the lower minimum?
    12,000 gal in-ground, blue granite pebble, Hayward Ecostar pump, 525 sqft cartridge filter, 250 sqft solar panels, TF100 test kit

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    needsajet's Avatar
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    Re: SURVEY - Liquid FC Dosing

    Interim results from 8 responses:
    6 Stenners, 1 Liquidator, 1 custom peristaltic pump based
    All so far dial it in based on drop-based testing
    Pump run times from 5 to 24 hours, longer run times at lower RPMs
    Injection times from 22 minutes to same as pump run time
    Dosing spread out for 7 and 1 injects all at once
    7 inject during the day, 1 injects both day and night
    None use less than 7.5% FC/CYA ratio, comments received ranged 10% to 12%

    Thanks again for responding. Hopefully we get a few more.
    12k IG salt; glass beads in plaster; K-2006C, K-1766, CCL, and Aussie 4in1 (HTH); Pentair Eco800 1.2HP VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; prior pool AG 10k | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

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    Re: SURVEY - Liquid FC Dosing

    First time posting, been reading and using the method since we got our new pool/spa in April.

    1. Which liquid chlorine dosing system do you use? (Pentair chlorine pump/tank)
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? (Intellichem sensor
    3. What is your current pump run time? (7 hours per day, 6 pool/spillway, 1 spa, going to start reducing the time to save electricity)
    4. What is the run time of your liquid chlorine doser? (By volume, per sensor)
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? (spread out, 20 minute mix time between doses)
    6. Do you inject chlorine during the day, at night or both? (day)
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? e.g. 3 ppm FC min at 40 ppm CYA. (No, have intellichem set to 740 orp and keeps the FC around 5-6 with 50 cya)
    8. If yes, have you experienced any algae outbreaks while using the lower minimum? (n/a)

    Been using the intellichem with chlorine and acid pump/tanks. Havent manually dosed chemicals in over 6 weeks. System seems to be working good. PH stays a constant 7.6. I test daily still with my K-2006.
    8000 gal pool with 800 gal spa, inground pebble/gunite, Pentair FNS Plus 60 DE filter, Pentair Intelli-Flo VST 2 pump, Pentair Master Temp 400 heater, Pentair Easy Touch 8 with IC40 (not using yet) and Intelli-Chem with Chlorine and Acid pumps/tanks, city water with salt water discharge restrictions.

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    Re: SURVEY - Liquid FC Dosing

    1. Which liquid chlorine dosing system do you use? (Stenner 45MPHP10)
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? (dial it in based on drop test.)
    3. What is your current pump run time? (6 hours per day)
    4. What is the run time of your liquid chlorine doser? (30 minutes per day)
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? (spread out, half time in the middle of the day, half at night.)
    6. Do you inject chlorine during the day, at night or both? (both)
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? e.g. 3 ppm FC min at 40 ppm CYA. (No, I try to keep as close to target as I can without going over that mark, though I often do as the result of a cloudy day and my Stenner pump's reliability)
    8. If yes, have you experienced any algae outbreaks while using the lower minimum? I haven't seen anything but the occasional CC in my drop based test all year long, and that only started recently. I need to pull my wedding cake stairs and check them for algae.

    17,500 gallon IG Vinyl
    Pentair Tagelus TA60D Sand filter
    Pentair Challenger 1.5HP pump CFII N1 1.5A
    Taylor K-2006-A, Stenner 45MPHP10 auto chlorine feed

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    Re: SURVEY - Liquid FC Dosing

    1. Which liquid chlorine dosing system do you use? (Stenner)
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? (dial it in)
    3. What is your current pump run time? (8 - [4 in am & 4 in pm])
    4. What is the run time of your liquid chlorine doser? (38 minutes per day)
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? (spread out)
    6. Do you inject chlorine during the day, at night or both? (day)
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? e.g. 3 ppm FC min at 40 ppm CYA. (No, < than 1 month - still working on fine tuning)
    8. If yes, have you experienced any algae outbreaks while using the lower minimum?
    10,000 gal | In-Ground | White Plaster | Chlorine | Cartridge Filter | V-Green 165 VSP | Borated | Filled from City Water Source | TF-100 Test Kit | 4 Returns | 1 Suction Port | Jan 2016 Build

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    Re: SURVEY - Liquid FC Dosing

    1. Which liquid chlorine dosing system do you use? (Stenner, other dosing pump, or Liquidator, etc.?)
    Liquidator

    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? (drop-based, sensor, sensor and dial it in, etc.)
    Dial in based on drop testing.

    3. What is your current pump run time? (hours per day)
    around 7 hours a day

    4. What is the run time of your liquid chlorine doser? (minutes or hours per day)
    It's adding chlorine whenever the pump is running ( around 7 hours a day)

    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? (spread out, or all at once)
    Spread out over the entire duration of the pump run ( about 7 hours)

    6. Do you inject chlorine during the day, at night or both? (day, night, both)
    Day between 11 am through 6 pm

    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? e.g. 3 ppm FC min at 40 ppm CYA. (Yes or No, comments also welcome)
    No, I target around 5 ppm FC at 50 ppm CYA. I test after my pumping cycle has ended in the evening.

    8. If yes, have you experienced any algae outbreaks while using the lower minimum?
    Well, I going to answer this anyway. This is my fourth season using the TFP method all with the Liquidator,. I never have had a algae outbreak nor have has to SLAM / shock my pool.
    Last edited by laprjns; 08-22-2016 at 06:51 PM. Reason: corrected typo, change 60 ppm to 50 ppm
    30,000 gal, 20 x 40 ft vinyl, IG, installed 2006
    1 HP WhisperFlo pump, 60 sqft Pentair Quad D.E., Liquidator(8 gallon) with 3/8 upgrade,TigerShark cleaning robot
    TFTestkits TF-100 with SpeedStir,WS
    A proud practitioner of TFP since 2013

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    poolnewbies5874's Avatar
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    Re: SURVEY - Liquid FC Dosing

    Quote Originally Posted by needsajet View Post
    I know everyone’s situation is different, but if you’re willing, please tell us how you use your liquid chlorine dosing system.

    1. Which liquid chlorine dosing system do you use? (Stenner, other dosing pump, or Liquidator, etc.?) Stenner
    2. Does your system respond to a sensor, or do you dial it in based on your drop-based testing? (drop-based, sensor, sensor and dial it in, etc.) Dial it in
    3. What is your current pump run time? (hours per day) 4 hours (2 hours day, 2 hours night)
    4. What is the run time of your liquid chlorine doser? (minutes or hours per day) 1.5 hours
    5. Is the run time for your chlorine doser spread out through the pump cycle, or is the full daily amount injected all at once? (spread out, or all at once) Spread out, 45 during afternoon, 45 min during night
    6. Do you inject chlorine during the day, at night or both? (day, night, both) Both
    7. Do you use a bare minimum FC level of less than 7.5% of your CYA level? e.g. 3 ppm FC min at 40 ppm CYA. (Yes or No, comments also welcome) No. I aim for the target level, not the minimum.
    8. If yes, have you experienced any algae outbreaks while using the lower minimum? NA since I don't go for minimum but this is 1st full year with pool and no algae thus far.

    Just copy and paste to answer (example below) and thank you for helping out if you can


    12,000 gallon Blue Hawaiian 'Hamilton' fiberglass IG 15x34 freeform, Pebble Beach finish, Pentair Clean & Clear 100 filter cartridge, Pentair SuperFlo 1.5HP pump, Stenner pump, Raypak 266k heater
    8/2015 pool build photos TFT-100 test kit

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