i have a 75 gallon tank that's already set up as a salt water with an overflow box in the corner with a sump tank underneath. i was thinking of putting the return pump head on the bottom of the other side streaming towards the box to get some circulation going, but will this really work for good filtration? should i just get a regular filter and close off that overflow box?
salt water set up bad for fresh water?
- Thread starter somecallmetim52
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