I figured that I should finally put my tank on here. This is a Boyu Nano tank. 128L with a custom hood and a Corona Rapid LED light. I've tried mechanical filters but I've switched to an ATS. I currently have a Black Sailfin Blenny and a Sailfin Tang. I've tried a variety of corals, but the only things I've been able to successfully keep are Acans and Xenia. My biggest struggles have been with balancing the phosphates and Calcium. My Nitrates are very low but my calcium and phosphates are always off the charts. Literally, every test kit I've bought, they are too high to read. I do 5-10 gallon water changes every week. I started using Instant ocean reef crystals and switched to buying premixed water from my LFS. The water that I put in aways has good levels, but once it's in my tank, the levels are still off the charts. This isn't the cleanest my tank has been, but it does pretty well.