How Much GFO for a 75 Gallon?

footballcs12

New member
I just ordered a GFO reactor and pump from BRS along with some GFO, but Ive never used any of this stuff before. How much GFO should I use for a 75 gallon mixed reef with a 30 gallon sump?
 

reefgeezer

New member
I use about 1/3 of a cup. I'd start with about 1/4 cup and see how that works. It's easy to use too much and strip too much too fast.
 

D-Nak

Active member
Use the GFO calculator on the BRS site. The amount varies by type of GFO. I started with half the recommended amount, then slowly worked up to the recommeded amount.
 

kingb4c0

New member
I would start with 1/2 of what BRS recommend, test your effluent weekly to make sure is not exhausted and start leaching phosphate back into your system.
 
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