I have a 55 gal tank with about 40-50lbs of live rock. Crushed coral bed about an inch thick. I have an Emperor 400 hang on filter. I also run a seaclone protein skimmer. Fish include a blue hippo tang, coral beauty, two small clown fish and a golden neon goby. Plus some snails and hermit...
My 55 gal tank was running without any problems except for my nitrates where around 20ppm right before my weekly water change. I wanted to reduce my nitrates and on advice from my LFS I added some substrate (crushed coral) to deepen my bed. I read many articles on sandbeds and denitrifying...
