adding GFO

[rfequity]

I wonder if someone could help me to add GFO in the right way to my tank. I have a 65 gallon tank, lightly stocked with SPS. I have a 15 gallon sump with Chaeto in place.

I just purchased a "Two Fishes" Phosban reactor. I have read about the dangers of using too much of this material so I want to get it right.

I have the Oceans Blend phosphate remover which is nothing more than GFO.

I know I should start small, but how small.

I should mention that I have not tested for phospahte, I have 0 nitrates according to Salifert and Seachem. No algae growth except for the light dusting on the glass every couple of days. My corals just don't seem to be as colorful and some appear to be losing color.

Am I on the right track?

 

[gws3]

Make sure you use a ball valve with a ~100 gph pump on the reactor. Start with 2 tablespoons or 1 oz of GFO. Turn the flow rate through the reactor was down, if the GFO tumbles too much it can break down into very small particles and get released into the system. For a 65 I think working your way up to about 4 ozs total GFO over a period of a month would be a good way to go.


If you are solely trying to solve the coloration of your corals there are many other possibilities to the cause if color loss than high phosphates.

What are your parameters and lighting?

 

[Horace]

Adding GFO to a tank that has brown corals is likely the best option IMO unless you have totally insufficient lighting. Continue with normal WCs of course. Just take it slow