Looks like the pellets work great for reducing nutrients, and safer than carbon dosing. I'm wondering if there's any use for this in a system that already has low nutrients.
I know it produces bacteria that provides food for corals, but won't live rock be doing essentially the same thing? Bacteria-plankton should be sloughing off the rock in the same manner, it's just not as obvious.
Still on the fence... but this looks very interesting.
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