Quote:
Originally Posted by kien
You don't have to turn off the GFO, but you should turn off carbon if you're running a carbon reactor.
You can install an airstone. If you're running a skimmer you can either turn it off, or take off the skimmer cup and let the skimmer overflow into the sump. If you turn your skimmer off then make sure you do add an air stone to help keep your tank oxygenated.
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thanks!! much appreciated