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Thread: TFPC, Water Balance & Saturation Index

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    domct203's Avatar
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    TFPC, Water Balance & Saturation Index

    First I want to say that I am very happy with my pool since using TFPC. The water is always clear and inviting, I just wish it would warm up LOL.

    With that said, while my water is always clear, it just seems to lack that sparkle that I see in pools here.

    Here are yesterday afternoon's full numbers (Taylor K2006):
    4:20pm 75F
    FC 6.0ppm
    CC 0.0ppm
    pH 7.4
    TA 80ppm
    CH 20ppm

    CYA was just about 40ppm last time I checked, pH is very stable.

    Back to my sparkles LOL. For the first time since getting the kit I actually read the book that came with it. Very good read actually. So now I plug my numbers into the Watergram Balance Calculator that came in the kit to find I have a SI of -1.3

    Now, I feel all my numbers are good, great actually. But she just doesn't sparkle.

    Would getting my SI closer to zero help my pool water sparkle?

    With TA & pH where it is I would need to bump CH to almost 400ppm for an SI of zero.

    Am I barking up the wrong tree?

    Edit: After playing with the Watergram a bit I see that if I shoot for an SI of -0.5 I only need to bump CH to about 120ppm.
    Dom
    Dom - TFP Guide
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    Richard320's Avatar
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    Re: TFPC, Water Balance & Saturation Index

    Wrong tree. CSI has to do with Calcium leaching out of plaster pool walls or depositing scale on them. If high CH contributes to sparkle, my pool should glow in the dark and it doesn't. Calcium tends to cloud water when it gets added, so you'd be dulling the sparkle you have. OTOH, low Calcium can cause water foaming out the returns. You could buy some Cal-hypo to chlorinate with for a while if that's an issue for you.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
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    Re: TFPC, Water Balance & Saturation Index

    Ha ha, glow in the dark. That actually sounds cool.

    Thanks for the info. No water foaming or other issues, I'll leave the CH as-is.

    Any tips to really make a pool sparkle?

    Dom
    Dom - TFP Guide
    Intex 18' X 48" Ultra Frame AGP 6700 gallons | Two Intex CS8110 SWG's | Hayward Pro Series 21" Sandfilter | Hayward 1.5HP Power Flo Matrix pump | Hayward Thru-wall Skimmer | Wanda the Whale | 72 sq ft of Sungrabber Solar Panels with Hayward GLC-2P-A | Taylor K2006 Test Kit, Sample Sizer & Speed Stir | Click Here To Become a TFP Supporter!

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    Richard320's Avatar
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    Re: TFPC, Water Balance & Saturation Index

    Quote Originally Posted by domct203 View Post
    Ha ha, glow in the dark. That actually sounds cool.

    Thanks for the info. No water foaming or other issues, I'll leave the CH as-is.

    Any tips to really make a pool sparkle?

    Dom
    Pool School - Add DE to a Sand Filter

    Find a neighbor with a DE filter and beg a can full of DE or cellulose. You'll be using so little, a bag would outlast the pool. Note: if it is cellulose, don't keep trying to reach the 1 psi increase. Add the half cup or whatever and leave it alone. See what pressure is after a day.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: TFPC, Water Balance & Saturation Index

    Well, no neighbor with DE.



    Guess I have a lifetime supply.

    Dom
    Dom - TFP Guide
    Intex 18' X 48" Ultra Frame AGP 6700 gallons | Two Intex CS8110 SWG's | Hayward Pro Series 21" Sandfilter | Hayward 1.5HP Power Flo Matrix pump | Hayward Thru-wall Skimmer | Wanda the Whale | 72 sq ft of Sungrabber Solar Panels with Hayward GLC-2P-A | Taylor K2006 Test Kit, Sample Sizer & Speed Stir | Click Here To Become a TFP Supporter!

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    Re: TFPC, Water Balance & Saturation Index

    How long each day are you running the pump? The Intex filters are marginal in their cleaning power and that could be a contributor. You may also find that simply adding around 10 ppm of Clorox to the pool (as a one time dose) will help it sparkle up.

    Regardless, calcium has nothing to do with it.

    That said, your Calcium is strangely low. 250 - 400 is normal. You aren't filling with softened water are you?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: TFPC, Water Balance & Saturation Index

    I run my filter 3 times in a day, 4:30am-6:00am, 10:45am-2:00pm, & 2:45pm-6:00pm for a total of 8 hours. The filter is supposed to flow 2150GPH, the pump 2600GPH per the Intex info. I chose 8hrs so I could get 2 turnovers a day.

    No water softener, filled straight from the garden hose, CH has been 20ppm since I filled the pool mid May.

    Dom

    edit: I think I'll pickup some cal-hypo and give that 10ppm dose a shot, and gain 7ppm CH too. Should I raise the CH into the 200's?
    Dom - TFP Guide
    Intex 18' X 48" Ultra Frame AGP 6700 gallons | Two Intex CS8110 SWG's | Hayward Pro Series 21" Sandfilter | Hayward 1.5HP Power Flo Matrix pump | Hayward Thru-wall Skimmer | Wanda the Whale | 72 sq ft of Sungrabber Solar Panels with Hayward GLC-2P-A | Taylor K2006 Test Kit, Sample Sizer & Speed Stir | Click Here To Become a TFP Supporter!

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    Re: TFPC, Water Balance & Saturation Index

    I added just a little Borax when I first filled my pool a few years ago, after I got everything where it needed to be, and it gave it a bit of sparkle. No where near the "adding borates" amount, just a little bit in a pool your size.
    26' X 52" Intex Ultra Frame. Intex Sand Filter
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    You can lead a horse to (clear) water, but you can't force him to swim in it!

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    Re: TFPC, Water Balance & Saturation Index

    Just did a very through backwash & added 1-3/4 cups of DE per TFP instructions. Pressure is up just about 1psi, return flow still seems very good. Will check pressure in a half hour, then probably every hour.

    We we got a couple of inches of rain last night, with high winds adding a bunch of junk into the pool, so I'll keep up on filter pressure. Water level is high so I'll be back flushing again tonight & recharge the DE (lord knows I have plenty) so I hopefully don't need to worry tomorrow while I'm at work.

    I'll update this post after a few days of filtering this way. I'd rather try this first before adding borates, I'm trying to keep the chemistry simple. So far all I have had to put in this pool is Chlorine and I'm loving it.

    Dom
    Dom - TFP Guide
    Intex 18' X 48" Ultra Frame AGP 6700 gallons | Two Intex CS8110 SWG's | Hayward Pro Series 21" Sandfilter | Hayward 1.5HP Power Flo Matrix pump | Hayward Thru-wall Skimmer | Wanda the Whale | 72 sq ft of Sungrabber Solar Panels with Hayward GLC-2P-A | Taylor K2006 Test Kit, Sample Sizer & Speed Stir | Click Here To Become a TFP Supporter!

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    Re: TFPC, Water Balance & Saturation Index

    So far all I have had to put in this pool is Chlorine and I'm loving it.
    You are a good TFP dude!! That principle will save you time, money and give you a sparkling pool. We promise!
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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