Can't keep any cl

2001rotax800

Well-known member
Mar 30, 2008
62
Thanks to all on this board for all the help and ideas. I just wanted to post my little problem ans see if you all agree with my course of action.

Last year I really got my pool dialed in, I was running the pump for 6 hours, 3 in the morning and 3 at night, with my swcg at 40%. I always had fc of 8 or better and all I ever added to my pool was hcl as nessesary to control ph and 1lbs of stablizer.
This was with about 70-80% sunlight.

Now this year I had some trees cut down next door and this allows 100% sun light.
I have increased my swcg to 80% and now run 4 hours in the am and 4 hours in the pm, also put a total of 2 lbs of stabiliser, I can barely hold 1 fc and sometimes 0 :(
 

JohnT

Admin
Mod Squad
TFP Expert
Apr 4, 2007
9,476
SW Indiana
2lbs of CYA would only raise your CYA by 10ppm. For a SWCG, you probably need to be running at 70-80ppm, which would take as much as 12 more pounds depending on where your CYA was at the start of the season.
 

duraleigh

Admin
Mod Squad
TFP Expert
Platinum Supporter
LifeTime Supporter
In The Industry
Apr 1, 2007
31,713
Sebring, Florida
rotax,

What JohnT said....

Plus, how does your water look? I suspect you might need to shock? Have you done the overnight FC loss test found in Pool School?
 

2001rotax800

Well-known member
Mar 30, 2008
62
Yes thank you, I proceeded with a shock, and also added another 4 lbs of cya, I had mistaken, I had previously added 8 lbs not 2lbs. I suspect not having quite enough cya added with my swcg not being able to keep up with my chlorine demand. Now that I have shocked it, everything should stay in shape, Thanks Jesse
 

Ohm_Boy

TFP Expert
May 1, 2007
1,344
Orlando, FL
Jesse,
If you could post a set of test numbers, we could better advise you with your situation. Right now, the best anyone can do is guess.
 

david8956

Member
Jun 9, 2010
8
Believe it or not.........I had the same issue when I added my SWG a few months ago, it just wouldn't make enough chlorine. I was told phosphates were the problem, used some phosphate remover, got phosphates to zero and chlorine levels have been no problem to maintain since then!
 

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