My local fish store has been very inconsistent with inventory, and I have had it. I have thought about switching to Tropic Marin but am open to other suggestions. I am using the Reef Salt and the component 1,2,3. I predominately have a SPS tank. My current alk, cal, mag are 8.3, 490, 1480. What are you using, and what would I need to transition to that? (meaning salt and ca/alk/mg). Thanks!