Tumbling GFO

[Mr. Fish]

I set up my BRS deluxe GFO/Carbon Reactor today and I have it so I can just barely see some of the granules barely moving at the very top none of the granules below the very top move. Is this good?

[fishchef]

Yes, sounds good. You'll have to monitor your PO4 to check performance. The best way is with a Hanna. My experience has been that chemical color tests just aren't accurate. Check with your LFS to see if they can do this or just buy one, but they can be pricey.

[lvpd186]

agreed, some people use the comparison of flow through GFO to a light boiling action. If you've got that your good.