Alkalinity won't go down...

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
37,016
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
My pool, at 70 ppm CYA, I peak at about 4.5 to 5 ppm FC loss per day.

I believe you will want at least 50 ppm CYA. Much higher does not do that much more good unless you have a SWCG.
 

Kevinr14

Well-known member
Mar 8, 2021
109
Phoenix, AZ
Pool Size
15000
Surface
Plaster
Chlorine
Liquid Chlorine
Over a month since i got started on this pool and it's been a piece of cake once my chemistry got in order. I've only been adding chlorine every night and MA every 5 to 6 days when PH gets to 8. The only other thing I've done is increased my CYA to 50.

My FC loss has been super predictable. On a full sun day, i can bet it lost 2ppm. If a little cloudy, it'll be 1.5. Admittedly there have been nights where it got late and i just added chlorine without testing...but the next evening, it was exactly where i predicted it would be based on the consistent FC loss. I know the predictability changes with the weather and I'll have to relearn the pool's needs but as of right now, it seems too easy. I'm waiting for the pool to turn green or start growing swamp monsters to prove me wrong.
 

Teald024

TFP Guide
I'm waiting for the pool to turn green or start growing swamp monsters to prove me wrong.
LOL, nope, no such luck. You're over the learning hump and now it's predictable and you know it's appetite for chlorine. You have entered into the realm of a "boring" pool!! Not really, but you can feel more secure in skipping a day of testing and just adding what the pool needs. Great job so far.
 

CrystalRiver

Well-known member
Jun 19, 2020
522
Massachusetts
LOL, nope, no such luck. You're over the learning hump and now it's predictable and you know it's appetite for chlorine. You have entered into the realm of a "boring" pool!! Not really, but you can feel more secure in skipping a day of testing and just adding what the pool needs. Great job so far.
Yup. Just don't get cocky and skip testing for several days in a row, and once swimming starts you'll need to learn your pool's appetite for chlorine after swimmers, too.
 
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