I think its a money making thing Quinster, I always only used Kalk and a 2 part if i didnt have a reactor. I let the natural way take care of it self ,because every tank will be differnt as you already know.
people will say you need MAGnesium and stronium and all the other ones lots of them are for people who dont require reactor.
oh ya its going to depend on the corals that you have placed in your tank certain corals and fish need certain ones. its going to depend on what the buyer has read up on to see what their tanks need.
mike
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180 starfire front, LPS, millipora
Doesn't matter how much you have been reading until you take the plunge.
You don't know as much as you think.
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