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GFO Media Calculator
Calculate the right amount of GFO phosphate removal media for your tank volume and product type.
Standard granular ferric oxide. Good balance of capacity and flow rate.
Unit:
1 gal500 gal
Recommended GFO amount
12.5 tbsp
0.7813 cups
BRS Granular GFO for 50 gal tank
GFO should be used in a fluidized media reactor for best results.
Replace GFO when phosphate levels start rising again.
Rinse GFO thoroughly before use to prevent cloudiness.