How much GFO? - Canreef Aquatics Bulletin Board

01-31-2015, 06:07 AM

gregzz4

On Hiatus

Join Date: Oct 2011

Location: Burnaby, B.C.

Posts: 4,890

The BRS calculator states I should use .86 cups for my system.
That's about 225mls.
I've been battling algae for over a year and decided to back off my GFO amount.
I'm down to 100mls/month and the algae is under control.
I feel the added Iron from the GFO was part of my issue, not the GFO stripping the system as I've always had some measurable PO4.

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