I've tried supplements and my tank never seems happy when I do. I've tried the calcium buffer blocks and it actually ended up killing most of the inverts in my nano. My shrimp would molt and end up legless. I've also tried Seachem reef complete but I didn't see any positive effects. My tank is at its best when I simply use Kalk drip and water changes. That's when I get the most Coraline growing. I'm sure it would be even better if I had a Calcium reactor, but I no longer add any chemical additives as I don't really believe in them.
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