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Hello i was thinking i need a new powerhead for my qt. It’s a 10 gallon tank. What’s the water flow i should be looking for? Would a 420gph be to much?
160 gph. At the moment I'm using a 30g HOB (160 gph) on my 10g QT. I first tried a 40g HOB and it blew a juvenile fish I have around the tank. To much stress wearing them out like that.