Quick question....

tadcpht

Well-known member
Jul 17, 2012
95
Forest, VA
Is it possible for a pool that gets sunshine from 7am - 7pm to lose 5 ppm FC in one day just due to sun burn off? CYA is currently at 60.
 

woodyp

Mod Squad
TFP Expert
LifeTime Supporter
Apr 17, 2010
10,576
East Texas
Mine loses 4 and everybody else here seems to think that's high too. But it is what it is. CYA around 50. YMMV.
 

tadcpht

Well-known member
Jul 17, 2012
95
Forest, VA
I guess the only way to be sure is to run an OCLT to make sure that I am not losing FC to anything else. If that comes back ok.....I guess it is what it is. Does pH gradually creep up? I usually have to add 1/2 gal of 8.25% clorox and some acid to balance out every day. Do these numbers seem within reason or is something sinister going on?
 

tadcpht

Well-known member
Jul 17, 2012
95
Forest, VA
OCLT results are in

I ran an OCLT test last night and I lost 1.5 ppm of FC. So does this definitely mean that I have something in my water? It went from 10 to 8.5

Also when the solution goes from light pink to clear, do you count the last drop?
 

tadcpht

Well-known member
Jul 17, 2012
95
Forest, VA
Ok I was not counting the last drop, results are unchanged 21 drops last night, 18 drops this morning. 10.5 to 9.0 FC The water looks spectacular, crystal clear. There are always several (30-40) insects (spiders, rolly polly, worms and earwigs) in the bottom of the pool every day. I vacuum them out every other day. Could I be losing FC to those bugs as well? As far as pH is concerned I test before I add chlorine. Very little aeration....one jet that just breaks the surface. I will try and post a pic.