Hi I started up my aquarium about 3-4 months ago using reef pro mix for about $70. I’m a student and don’t have tons of money to buy $70 salts every few months (I will of course buy them if necessary). But I was wondering if it’s okay to use Instant Ocean® Reef Crystals Aquarium Reef Salt too and switch the salts whenever I run out. (For money saving purposes) Or could that affect the tank switching salts every few months?