Walmart generally carries HTH brand, labeled as stabilizer & conditioner. Check the pool aisles.
Definitely use PoolMath to see how much you need to add, then put about 1/2 to 2/3 of that in a sock. Put the sock in your skimmer, or hang it in front of a running return.
Definitely use PoolMath to see how much you need to add, then put about 1/2 to 2/3 of that in a sock. Put the sock in your skimmer, or hang it in front of a running return.