Have you added any live rock or substrate? Will help your problem and also get the bonus of biodiversity. I ended up adding about 10lbs of rock from 3 different local stores and 2 lbs of crushed coral from their shark tank
Definitely good to have more surface area for bacteria to colonize but getting live rock or substrate from other established tanks does run the risk of introducing unwanted hitchhikers to the tank. A lot of people don't care and welcome the surprise critters, but some of them aren't such a pleasant surprise sometimes. Just something to note.




