bwyoung,
What media are you running in the PM reactor in your sump. Also, how are you running it. Is it on 24/7 or do you take it off line at some point. Thanks.
I am using the Bulkreefsupply.com ROX 0.8 High Performance Carbon. I have a 600 lph maxijet pumping into it 24/7. I change it every 8 weeks or so.
I took it out a couple weeks back and got distracted so I did not put it back in until this past weekend.