Re: Which test to trust on CYA
When the pool store tests for CYA, make sure that they clean the tube with the black dot. If they don't then don't accept their reading. That is why I do my own testing, and it is painstakingly consistent.
Remember too that the way they do it, is highly likely different from the way you do it.
Pat
Last edited by PatL34; 07-24-2006 at 05:17 PM.
20,000 Gallon IG Diamond Brite pool, 1.5 HP Sta-Rite pump, Hayward Microclear DE3600 filter, Favco solar panels, Poolpilot DIG-220 with SC-48 cell.
+ SWCG OPERATION thread here: http://www.poolforum.com/pf2/showthread.php?t=1226
+ SWCG Running Costs post here: http://www.poolforum.com/pf2/showthread.php?t=316
+ Effective Stabilizer addition post here: http://www.poolforum.com/pf2/showthread.php?p=6645
Re: Which test to trust on CYA
someone posted on here in the worst pool store story thread that sounds like it might be what is happening in your case!
http://www.poolforum.com/pf2/showpos...2&postcount=27
You are testing 30, they are saying 70.....100-30=70! Sounds like the training at one of the larger pool store chains leaves something to be desired!
Retired pool store and commercial pool maintenance guy.
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