I currently have a 55 gallon FOWLR and have been running it with some clownfish in it using the Instant Ocean Sea Salt mix. I am hoping within the next few months to maybe get some very easy corals (maybe an oxymoron) soft corals for the tank. My question is: if I do so, should I be using the I/O reef crystals to make the water or can I continue to use the sea salt? Is this something that I should be transitioning over to the reef crystals? If so, can it be done a little at a time with water changes? and will the change from the salt mix to the reef crystals effect the health of the fish?