Well I have confirmation--I should have listened to my friend who said don't get the diamond goby if I want clear water. Always had hazy looking water in the 90G, and it was crystal clear in the 135. Moved the diamond goby over yesterday. Today the 135G is looking slightly cloudy and the 90 is more clear than ever. And the goby is dusting up a storm in his new digs. Any ideas to counteract what he's doing?