Nothing wrong. I do that too!
Coralife works for me. Cheap and good.
Remember, always add salt to water and not water to salt, unless you want to see calcium precipitation. The snow storm will take a much much longer time than a day to settle... sometimes not at all!
Old or wet salt does this so keep your salt in air-tight containers! This will prevent them from hardening into salt rocks and a pain to dissolve.