We really need some numbers to be able to offer advice. I wouldn't blindly start adding a bunch of stuff until you know what your levels are. Think about buying the test kit that Ben sells at the sister site to this one poolsolutions.com. But, in the meantime, try and get a kit that will measure FC, TC (total chlorine), alk, ph and cya if you can. (A drops based kit, not test strips.) Then, post your numbers here and someone can better advise you.

Watermom