I haven't had my alkalinity tested ( i need to), all I add right now to my tank is Purple-Up which contains Calcium and Iodine, as well as periodically adding reef buffer(for pH) and reef builder (for alkalinity).I really do need to get the alkalinity tested because I have no idea what it is, I'll do that sunday when I go into the LFS. i've been using Instant Ocean salt with amquel dechlorinated tap water.
Soon, on sunday, I am going to switch over to RO water with I think it's Red-Sea salt (in the buckets) which is formulated with everything I need, I hear, and all I'll need to add are a liquid buffer and builder (I hear). They tell me as long as I do 5 gallon weekly water changes with the red-sea salt that'll have all the additives any coral will need (besides food).
Maybe I should have waited for the mushrooms...