First of all, we need some good current water testing numbers to be able to help. Go see if your local Walmart has an HTH 6-Way drops kit (NOT test strips) and test your water. If they don't, at least pick up a cheap OTO/Phenol Red kit (yellow and red drops). Also, get a jug of distilled water, a bunch of jugs of their generic 8.25% bleach and two or three boxes of 20 Mule Team Borax (laundry aisle).

Repost with some numbers and when you do, also tell us:
-- exactly what all you have put in the pool, meaning ingredients and not just product names
-- what size pump you have (hp)
-- what size filter you have (how much sand does it hold)
-- what your source of fill water is (a well or city water)

Then, someone here can try and help.