I was recommended to this store by a friend because I was using Leslies and I couldn't walk out of there without at least $50 in chemicals every week. The man who owns this store is very honest. I spend very little on chemicals now, just some acid now and then and chlorine, of course. He is extremely knowledgeable about pools, spas, and pool maintenance. I bring him pictures or explain the problem and he tells you exactly how to correct it without gouging you for things in the store.
You MUST get past the fact that he can be gruff at times but it is not personal. It is just the way he is. If you exercise some patience with him if he answers you gruffly you will be satisfied with the result.
Trust this store and the owner and you will save yourself a ton of expense and grief.