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Glad to hear you're considering live rock, because its absolutely the answer to the question you originally posed. Live rock has been shown to establish hundreds of different types of Bacteria and Archaea in the tank within weeks, while dry rock tanks lack these types (and so do bottles).I am now. I have about 60 or 70lbs of dry. But I want to find a way to add at least 30lbs of live.(gulf live, Tampa, etc) I don’t want a ton of rock in my DT so fish have some room and flow is reasonable enough not to have any dead zones. But my impulse buy sump does not have nearly enough space for even a refugium with 10lbs or rock. Should I just say screw it and go for the diy Tupperware sump? Lol
You might also consider some live rock and live mud which have also been shown to add lots of microbial diversity.