I've had my 55 gal for 10 years with an Emperor 400 and 280 on the back. I was fish only for the first 8 years or so, but recently I've been adding a few corals. I'm in the process of getting my new 225 up and running with a fuge, skimmer, etc, and plan to use the 55 as a quarantine or coral grow out tank. I read recently that the filters cartridges are nitrate factories, and I've always had issues with higher nitrates (5-20) even with frequent water changes. So, I'm taking out the filters. What do I put in their place? A bag with carbon? I have some hard plastic mesh type filters that I could add some carbon to if those would work.
Thanks
Thanks

