I orignially used fritz rpm blue box, but that just ran out today so i went to lfs and i purchased the tropic marin reef pro salt, was this a bad idea? inhabitants of my tank are two clowns 3 zoanthids 1 kenya tree and a bunch of cuc, also does anyone know a way to be doing less water changes? My tank is big and switching out 15 gallons a week is getting a little expensive, my tank is still relatively new and i am going through some really bad diatoms