'Bear, I think Holly got the point.

In fact, our B-B-B method is based on the fact that good pool maintenance does NOT need lots of chemicals pushed by pool stores. We generally don't recommend:
Phosphate removers
Clarifiers
Bluing
Flocculents
Yellow-Out
Metal "removers"
Copper
Silver
Nor a zillion other things.

Normal pool maintenace, and even algae fighting can almost always be done with:
Bleach/Liquid Chlorine
20 Mule Team Borax
Muriatic Acid
Baking Soda
Washing Soda
and CYA(stabilizer).

Carl