Hi, new the the forums but old to fish keeping. I used to have keep a reef tank and after a move and kids, didn't have the time to keep it any longer. A few years ago, I put my tank back up as a low tech planted tank and now have the itch to go high tech. I still have all of my saltwater equipment, including a few media reactors. I run carbon in my canister filter, but, is there any downside to running a few media reactors separately as an additional water filtration source?