Re: I'm refilling my pool -- now what?
Originally Posted by laughingboy
The most important item in your arsenal is the test kit (but you knew this) so don't be afraid to use it! Once the pool is filled and the pump/filter has run an hour or two, take a sample from 18" down from the surface of the water and do all of the tests. This will give you a starting point and inform decisions about how much muriatic acid will be needed to lower the pH (assuming it needs lowering) and your starting TA and CH levels, Free Chlorine / Total Chlorine levels, etc.
My opinion is that you don't need to shock a newly filled pool, but you will want to increase the chlorine to your target level and add cyanuric acid (CYA) as soon as possible. I think your plan to start with Trichlor (not in the skimmer) is fine, but others here may take a different view. If this were my pool (with no SWG) I would do all bleach or supplement one bag of the Trichlor shock powder by dumping in enough liquid chlorine or 6% bleach to raise FC to at least 3 PPM on the first day. The CYA may take a few days to come up to your target.
Don't be in a hurry to adjust everything. Start with chlorine and pH, a few hours apart. Then, if TA or CH need to be increased, do this subsequently but on different days.
To the best of my knowledge the chemical levels suggested by the option you selected in the Pool Calculator align with those recommended here.
Last edited by polyvue; 06-23-2010 at 02:01 AM.
Reason: Correct typo
16'x29' free-form 14K gal IG concrete pool; SWCG & sodium hypochlorite 6%; Hayward SwimClear C4025 cartridge filter; Hayward TriStar SP3210EE full-rated 1HP 1.85 SF pump; hrs; Taylor K-2006C, K-1285-2, K-1766; Other kits/Aquachek/Hach strips for infrequent tests; city; PF:8.6