How Much Filtration Do Large Tanks Need?
As a rule of thumb, the filtration depends on whether the tank is lightly loaded or heavily loaded. A tank should have a flow rate of at least three times as large as the tank size; if you get filtration four times larger than the tank size, that is even better. Meanwhile, you must remember that your tank needs balanced filtration; over-filtration and under-filtration can harm your tank's inhabitants.