I've been running this stuff in my 125 for 2 years now and can't say enough good about it. Very clear water and steady ya er parameters. This is the 125 with a few days of running 2 bags of new purigen.
I just started running it in my 220 because I had some tannins leaching from my driftwood that were turning my water brown. So I'm running 3 bags of it in the 220 now.

I just started running it in my 220 because I had some tannins leaching from my driftwood that were turning my water brown. So I'm running 3 bags of it in the 220 now.
