Yellow water

[Johnny Reefer]

I'm using Zeozym, but I use it as a slime prevention measure.

Re: Yellow water, I was getting this in my "FOWLR" system. I just ramped up the amount of carbon from 2 cups to 3. I placed the 3rd cup, not so passively, pinned to the top of the last baffle in my sump. In other words, the 3rd bag of carbon is in flow. This was before I started Zeozym, and it did work.

Further to this, as a cost savings measure, I use Kent carbon half the time and KZ carbon half the time. When I use Kent, I change it out every two weeks. KZ every 4.

HTH,