Pool math question

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jhenson67

jhenson67

Well-known member
Dec 4, 2021
50
Georgia
Pool Size
8436
Surface
Fiberglass
Chlorine
Liquid Chlorine
Good afternoon, imagine pools fiberglass pool here. Is there any way to change the recommendations in the pool math app?
Imagine recommends values so much lower than pool math. FC 2ppm, PH 7.2-7.4, TA 80-120ppm, CH 100ppm recommended.
 
jhenson67 said:
Imagine recommends values so much lower than pool math. FC 2ppm, PH 7.2-7.4, TA 80-120ppm, CH 100ppm recommended.
Click to expand...
Welcome to TFP! :wave: Those numbers you are showing are generic industry levels not applicable here on the TFP forum. Spend a little time here at TFP and you'll see the TFP levels are based on studies of thousands of pools of all types, method of chlorination, and location with specific criteria designed to not only keep the water sanitary and clear, but also properly care for the pool shell and equipment. Manufacture (and pool store) generic levels as you see there by Imagine do not do that and actually do owners a disservice.

See more on our Pool Care Basics page.
 
Texas Splash said:
Welcome to TFP! :wave: Those numbers you are showing are generic industry levels not applicable here on the TFP forum. Spend a little time here at TFP and you'll see the TFP levels are based on studies of thousands of pools of all types, method of chlorination, and location with specific criteria designed to not only keep the water sanitary and clear, but also properly care for the pool shell and equipment. Manufacture (and pool store) generic levels as you see there by Imagine do not do that and actually do owners a disservice.

See more on our Pool Care Basics page.
Click to expand...
Thank you, imagine pools warranty says I must maintain the chemicals at these levels.
I just had the pool put in back in April and just thought about asking. So far I’ve been able to maintain a perfect pool except for the CH.
 
jhenson67 said:
imagine pools warranty says I must maintain the chemicals at these levels.
Click to expand...
Not just Imagine. Viking, Latham, etc all provide the same "generic" level recommendations. It's a blanket product designed to give pool owners something to go on since many pool owners have no clue about water chemistry and how each level impacts the water, shell, and/or equipment. So a manufacture publishes something to protect their own interests, but they don't have the time to breakdown each & every scenario of pool care. TFP does. That's what this forum is all about.
 
Thanks. I agree, the 2019 edition of their warranty book said to maintain CH at 150-250 ppm. My 2022 version now recommends 100 and has a bigger section on how high Calcium can calcify on the pool walls with some pretty ugly pictures. So I don’t know how to move on pool math recommendations.
Thanks for taking time to talk me through this.
 
Last edited:
If you're having your levels tested regularly for warranty purposes, you may need to follow their recommendations for levels to avoid invalidating your warranty.

Once the warranty expires, of course, there'd be no reason to do so. So you'd be fine to switch over to TFP protocols then.
 
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100 seems really low. If your fill water is over 100, there's nothing you can do about it.
Mine was at 150 and I just added some calcium to bring it up to recommended levels, but still on the lower end. I had been lazy for a long time and left it low.
 
jhenson67 said:
Thanks. I agree, the 2019 edition of there warranty book said to maintain CH at 150-250 ppm. My 2022 version now recommends 100 and has a bigger section on how high Calcium can calcify on the pool walls with some pretty ugly pictures. So I don’t know how to move on pool math recommendations.
Thanks for taking time to talk me through this.
Click to expand...
May I ask, what exactly is your calcium level currently?
 

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So those numbers make me wonder how the calcium was added to your pool?
It would take over 9 pounds of calcium chloride to add 100ppm to 10,000 gal.

Also sounds like pool store numbers, a test kit wouldn't give you a number like 158.
The experts here will recommend that you get a good test kit and make the measurements yourself.
I use one from TFTestkits.net
Not cheap, but well worth it.
 
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randytsuch said:
So those numbers make me wonder how the calcium was added to your pool?
It would take over 9 pounds of calcium chloride to add 100ppm to 10,000 gal.

Also sounds like pool store numbers, a test kit wouldn't give you a number like 158.
The experts here will recommend that you get a good test kit and make the measurements yourself.
I use one from TFTestkits.net
Not cheap, but well worth it.
Click to expand...
I’ve been suspect of the pool store numbers. Especially since two different stores give different numbers!
I do have a Taylor 2006C kit and learning to use it. I have everything down so far except the CH and cya results are hard to pinpoint.
I suspect the calcium got so high when the pool builder’s cleaner dumped something in there (I’m thinking when they shocked it) after the build was finished.
The girl knew nothing about what she was doing! I was so frustrated at her.
 
Cya is hard, there are hints around on how to measure. I do it early or when its overcast so not too light.

The granular shock has CH, but I'm pretty sure its not possible that they added enough to raise it by 100.

I'd also recommend a magnetic stirrer, makes it so much easier to do the tests with a gizmo to stir while you add drops.

Randy
 
randytsuch said:
Cya is hard, there are hints around on how to measure. I do it early or when its overcast so not too light.

The granular shock has CH, but I'm pretty sure its not possible that they added enough to raise it by 100.

I'd also recommend a magnetic stirrer, makes it so much easier to do the tests with a gizmo to stir while you add drops.

Randy
Click to expand...
Thank you, I’ll look into that stirrer
 
Hi, I know I may have brought this up before but I can’t seem to get back to that thread (newb).
Imagine pools (fiberglass) warranty requirement chemistry is
FC 1-3
Ph 7.2-7.4
TA 80-120
CH 80-120
Cya 30-50
Would it be ok/acceptable if I can maintain my levels in the ranges above so that my 10 year surface warranty will not be voided.? Does anyone see any potential problems?
Thanks
 
You will never have a pH in that range with the TA in that range. You will be on the hamster wheel of acid and baking soda.

You also will have algae quite often with that level of FC. Your choice.
 
Thanks
The pool seems to be happy at ph 7.6 and a TA of 70-80
Water is crystal clear. This may be the sweet spot. What do you think?
I finally heard back from the pool manufacturer, as long as I’m close to their recommendations and keep a monthly log, I will be good with the surface warranty.
So I’m embracing the TFP.
 
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Mustard algae??, I have read all the TFP information and cleaning everything.
Have anyone got opinions on bio guard algae complete? I would like to try this before the SLAM process as my cya is 60 right now, FC is at 7 and it passed the overnight test. 2 days ago.
At first I thought it was pollen for the past few weeks. It is gathering in the corner and along the bottom side. But it’s on the sunny side. My wife says it on the wall this morning. Still in the sun. The photo attached is in the bottom corner 5 ft down.
 

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