Where the heck do you buy Dichlor?
We put up our pool a couple days ago, filled it with water, and have been adding bleach. Went to Walmart and they have a whole aisle of pool chemicals but everything that says 'shock' is cal-hypo(or something like that). I'm looking for the main ingredient of "dichloro-s-triazinetrione" mentioned in pool school that we should use for the first 4 days. I think we had this same problem last year and my husband ended up going to the pool store, came home with something, dumped it all in per their instructions - end result: we ended up draining the pool.
Is there a big box store we can buy this at, or do we have to venture back in to the evil pool store, or order online? We don't need a lot, and we may not get to swim for a week or so.