I am wanting to shock my pool again. I am not sure which pool shock i need to buy. Regular shock, shock plus ?? I want to use something that will increase my CYA. I am having trouble getting it up. It is low <30.
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I am wanting to shock my pool again. I am not sure which pool shock i need to buy. Regular shock, shock plus ?? I want to use something that will increase my CYA. I am having trouble getting it up. It is low <30.
Sort of depends on your pool volume. If your pool is large enough, so you can use it up, I'd suggest going to Sams Wholesale, and getting a 50# bucket ($105) of dichlor (sodium dichloro-isocyanurate) -- that's about 60% chlorine and 50% stabilizer (I know those don't add up -- you don't want to know why).
But, you don't want to store the stuff till 2012, so if you've got a small pool, you'd be better getting something smaller from Walmart even though it costs more (a lot more!) per pound.
But, do NOT get the 'goop' or "plus" shocks -- the ones with trichlor, clarifiers, water balance chems (usually borax), etc. -- those are ALWAYS a bad value, and often bad for your pool as well.
Ben
One thing to check, if you are experiencing issues keeping your CYA level up, is that you may possibly have a pool leak (especially if masked by an autofill device) or it could just be you've had plenty of rain and water replacement. How are you testing your CYA levels?