Found a 200 gallon box of Instant Ocean Reef Crystals for only $48 dollars. I was wondering if anyone has bought salt from amazon and if it sounds like a good idea. The seller is Petsolutions with a 98% rate. Although, the reviews were 3/5 stars because some said it just came with the box with 4 bags of salt and made it look like the bag of salt could have been anything. Need help deciding if I should go on ahead and buy this off amazon or not. I don't want to buy this and let it turn out to not be instant ocean reef crystal salt.