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Thread: Algae?? - Help

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    Join Date
    Aug 2013
    Location
    Cynthiana KY
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    5

    Algae?? - Help

    Greetings: Been busy with work and perhaps not paying as close attention as I should - though haven't been home during daylight hours until today.

    Had noticed last week, water was a bit cloudy - chemicals were all within normal ranges - backwashed and evidence of 'dirt' cleared and rinsed.
    vacuuming daily with Dolphin Edge
    Water remained cloudy + 1gal bleach about 4 days ago.

    Water still a bit cloudy - can see bottom but not sure if quarter was on bottom if I could tell heads or tail.

    Today - water remains cloudy and did notice tonight - 'film' on sides of deep end and bottom - when brushing it appears green.

    my numbers tonight (TFT 100)
    PH 7.8
    FC 6PPM
    CC 0
    TA 80
    CYA looks to be about 80

    any thoughts, ideas or guidance appreciated -
    I've done the signature thing, but can't see it on this post so would offer
    ~23k SWG (Aqua Rite) - free form vinyl - salt level showing 3100
    Hayward filter - been running past 36hrs -

    have had considerable rain past week (little past 24hrs) hot and humid weather

    thanks,
    Rusty204
    Rusty204 - In-ground Freeform Vinyl ~25,000gal SWG with Hayward Sand Filter and Single Speed Pump
    5 aerating return Fountains - Dolphin Edge Cleaner //TF-100 Test Kit with Speed Stirrer
    Location is Central KY

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    Texas Splash's Avatar
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    Re: Algae?? - Help

    Hello Rusty! From all indications you appear to have algae there. That would mean you need to "SLAM" (link below). A CYA of 80 equates to a SLAM FC level of "31". BEFORE raising the FC however, make sure to lower your pH first to about 7.2. Once confirmed, then increase the FC to SLAM level and maintain it along with all the other SLAM tasks on that page. Use regular bleach to maintain that "31" and give your SWG a break unless you are away from home with no one to assist with bleach additions. Jump on it now and try to maintain the FC as best as you can for best results. Good luck!
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
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    Jun 2015
    Location
    Jackson, NJ
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    Re: Algae?? - Help

    Aside from cost, is there a detriment to using cal-hypo shock instead of bleach?
    42' natural free-form pool, vinyl lined, 6' deep end, 21,400 gallons
    2 HP Hayward Superpump, Hayward Aquarite SWG, AquaComfort 125k btu heat pump, 350lb Hayward Pro Series sand filter
    2 skimmers, 2 floor drains, 10 returns (6 in the pool, 2 in the steps, 2 in the swim-out)
    TF-100 Test Kit

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    Texas Splash's Avatar
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    Re: Algae?? - Help

    Aside from cost, is there a detriment to using cal-hypo shock instead of bleach?
    As long as one's CH level can accommodate the rise in calcium, yes, it's okay. But generally speaking, for a SLAM that can last anywhere from a few days to a week or two for some pools, liquid bleach is simply more efficient.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

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    TFP Guide

    AimeeH's Avatar
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    Apr 2012
    Location
    Columbia SC
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    Re: Algae?? - Help

    Hi there

    Cal-hypo will add calcium to your water. You didn't post your CH but if it's already low then you shouldn't have to worry, particularly with a vinyl pool. The key is understand what you are adding and why. Cal-hypo "can" cloud the water also.

    With a CYA of 80, and the amount of chlorine you need to SLAM I'm guessing you'd rather use the cal-hypo over bleach for convenience? I've been there
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
    http://tftestkits.net/splash-page.html

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    Join Date
    Aug 2013
    Location
    Cynthiana KY
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    Re: Algae?? - Help

    Thanks Pat
    Lowered PH and just begun slamming - and hopeful i've gotten started ahead of it getting worse
    Water is not yet 'green' and the organic matter isn't accumulated thickly - and would be described as a thin film.
    Rusty204 - In-ground Freeform Vinyl ~25,000gal SWG with Hayward Sand Filter and Single Speed Pump
    5 aerating return Fountains - Dolphin Edge Cleaner //TF-100 Test Kit with Speed Stirrer
    Location is Central KY

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    Northern IL
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    Re: Algae?? - Help

    Remember that brushing is critical to a successful slam!

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    Join Date
    Jun 2015
    Location
    Jackson, NJ
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    Re: Algae?? - Help

    I've gotten away w/ Cal-Hypo b/c I have a SWG. I use the cal-hypo for the quick rise in chlorine levels; my SWG at 50% has always been able to maintain my shock level, if not push me a bunch over.
    42' natural free-form pool, vinyl lined, 6' deep end, 21,400 gallons
    2 HP Hayward Superpump, Hayward Aquarite SWG, AquaComfort 125k btu heat pump, 350lb Hayward Pro Series sand filter
    2 skimmers, 2 floor drains, 10 returns (6 in the pool, 2 in the steps, 2 in the swim-out)
    TF-100 Test Kit

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