I am actually the person who gave the OP the idea to start this one. I have my buble tower full of LR rubble and if I completely close the return diverter my Pan Worl pump will push around 900-1000gph and my tower has no problem controlling 90% of the bubbles at that rate.
Is the LR in the tower a future concern for Nitrates?
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-=Todd C
Current Tank Info: 14g Bio Cube, just getting started
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