I've had my tank for about two years. Had a 29 gallon before. My 90 gallon has been a workout from the beggining. First i had insufficient lighting and now i can't seem to keep my fish alive. A few nice corals, had a large tomato clown for about two years which i blamed for killing everything i presented to the tank. Caught him on Friday and kept him in the tank overnite in a trap, woke up in the morning and he was dead. Bought a royal gramma to test the waters and he died in two days. Tested the water at the fish store and everything was just right. My tank drove me to join this forum to get some advice.