Sorry but you lost me. I don't see red on left and green on right. How do you increase your cya?
Just ordered tf100 XL and spinstir. Where do I begin?
- Thread starter rp7777
- Start date
CYA can be increased with stabilizer or conditioner sold at walmart, home depot or pool stores. More on that here Pool School - Recommended Pool Chemicals
- Jun 22, 2017
- 861
- Pool Size
- 35000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45
I was just referring to where the FC dipped into the red zone at the bottom of the chart on left side.
Today's results of pool and tap water
8/30/17
pool water
FC 1
pH 7.5
TA 50
CH* 100
CYA 70
tap water
FC 1
pH 7.5
TA 20
CH* 0
draining 1/2 the pool now
8/30/17
pool water
FC 1
pH 7.5
TA 50
CH* 100
CYA 70
tap water
FC 1
pH 7.5
TA 20
CH* 0
draining 1/2 the pool now
- Jun 22, 2017
- 861
- Pool Size
- 35000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45
Get your FC back up for sure, even if you're gonna do another partial drain. Algae doesn't care whether or not your draining and can still form any time your FC is low.
Do you manually chlorinate, or use a SWG? And how does your water look now? Still a cloudy?
If you manually chlorinate, do another partial drain and refill, and hopefully CYA will be down towards 30-40ppm and you can stop there. If you use a SWG, stop here and get your FC into the target range on the FC/CYA chart in my signature.
Either way, once you're done doing the partial drains, get your CH back up to the 250-300 range so your water doesn't start pulling calcium out of the plaster. You'll also need to raise your TA back up to 70. pH looks great though, with your fill water being dead in the middle of the target range for a pool.
Do you manually chlorinate, or use a SWG? And how does your water look now? Still a cloudy?
If you manually chlorinate, do another partial drain and refill, and hopefully CYA will be down towards 30-40ppm and you can stop there. If you use a SWG, stop here and get your FC into the target range on the FC/CYA chart in my signature.
Either way, once you're done doing the partial drains, get your CH back up to the 250-300 range so your water doesn't start pulling calcium out of the plaster. You'll also need to raise your TA back up to 70. pH looks great though, with your fill water being dead in the middle of the target range for a pool.
I'll add that in sunny Florida, you could consider just leaving the CYA at 70 and letting it slowly come down due to rain and splashout to 60, which is a pretty good spot when you're dealing with intense sunlight on the pool. In AZ, I like to keep my CYA 50-60 for that reason - I lose too much chlorine each day to the sun otherwise.
My pool is already filling so I will begin adding chemicals per the pool math calculator tomorrow if I am within the CYA range. Is there a limitation or rate in which I should add certain chemicals? The pool store always had its own recipe print outs I assume TFP is there own methodology
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thanks triptyx but Im at the point of no return since I already drained it half way. It looks like I will be starting at about 40 tomorrow.
- - - Updated - - -
thanks triptyx but Im at the point of no return since I already drained it half way. It looks like I will be starting at about 40 tomorrow.
- Jun 22, 2017
- 861
- Pool Size
- 35000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45
General rule of thumb, add CYA to get to your target and add enough chlorine for your new CYA's FC target. Add acid/base to balance pH (yours will likely be fine), add CH for plaster pools, and then raise TA up to target.
muriatic acid to lower pH
Borax to raise pH (will also raise TA some)
Calcium Chloride to raise CH
Baking Soda to raise TA
Cyanuric Acid (stabilizer) to raise CYA
When you post your final test results, we can tell you what to do to balance it then.
muriatic acid to lower pH
Borax to raise pH (will also raise TA some)
Calcium Chloride to raise CH
Baking Soda to raise TA
Cyanuric Acid (stabilizer) to raise CYA
When you post your final test results, we can tell you what to do to balance it then.
Sounds good. At some point I need to resurface my pool which is one of the reason I wanted to learn how to test. By the time I am ready to have the work done, I will at least know what to do and maintain my new plaster. I know that new plaster will give me completely different #'s at first but I will already understand the testing principles by then. I am actually considering doing the work myself but I am a long way away from that decision.
- Jun 22, 2017
- 861
- Pool Size
- 35000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45
Save this link for when you do resurface your pool. The user on here onBalance seems to know a crazy amount about taking care of new plaster pools. One thing he mentions is being careful about filling a new plaster pool with soft water (low CH) like you have.
A Bicarb Start-up guide for TFP members
A Bicarb Start-up guide for TFP members
Thanks for sending the plaster link. It was interesting reading.
A brief update, my 8 year old is home from school and I asked her to do the cya test on her own while I'm a work. She is reporting that it's at 40. Just letting anyone know that these tests are easy enough for an 8 year to perform.
I will do all the tests later to get a full reading of everything
A brief update, my 8 year old is home from school and I asked her to do the cya test on her own while I'm a work. She is reporting that it's at 40. Just letting anyone know that these tests are easy enough for an 8 year to perform.
I will do all the tests later to get a full reading of everything
- Jun 22, 2017
- 861
- Pool Size
- 35000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45
Kinda impressed an 8 year old can do that test.
Lol. Kids have less fear than us adults learning new things.
Here are her official #'s while I sit at work. My inner nerd will verify the #s later
8/31
Pool filled a 3rd time
Fc .5
Ph 7.5
Ta 50
Ch 50
Cya 40
Oto 5.1 She even did oto... I have no idea what that Is
- Jun 22, 2017
- 861
- Pool Size
- 35000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45
Kinda hoping the answer is no because of the dangers of chlorine, but do you trust her to add some chlorine? FC of .5 is just begging for an algae bloom.
I can tell my wife. Would it really bloom that fast that it can't wait 3 more hours ? Do I add what it states in pool math? It reads 2 quarts 1oz
- Jun 22, 2017
- 861
- Pool Size
- 35000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45
When was the last time you chlorinated your pool though? All of your recent tests have showed a low FC, so if you haven't chlorinated in that many days, I worry it's already started. Worst case though, a slam in the 30-40 CYA range shouldn't take too much chlorine. And when I add chlorine to my pool, I always round up to whatever my measuring cup can read. Going over on FC a little bit won't hurt anything.
I haven't added any chemicals at all since before my initial test. I will take care of the chlorine when I get home. What about the other chemicals?
You'll need to raise your CH to avoid potential damage to your plaster. Other than that and the low chlorine, the numbers you posted are pretty good.
- Jun 22, 2017
- 861
- Pool Size
- 35000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45
If you notice your pH seems to go out of wack frequently, you can bump up your TA later on. I wouldn't do it now, just if in a few weeks your pH isn't stable.
At this point am I slamming the pool? This is kind of what lead me to the draining process because my water was getting algae too frequent. The steps were to lower cya then SLAM. I actually want to do this because I do not want to start seeing another algae bloom