Ok I'm gonna do my best to follow the suggested format from memory because I can't refer back to it since I'm on my phone. So 90 gallon, api test kit read 10ppm nitatrates, 0 nitrites and ammonia and ph at 7.2. Inhabitants are 8 green terrors 2 @ 4-5 inches 2 @ 2 inches and 4 at 1.5 inches, 2 red terrors 1 @ 2.5 inches the other@ 2 inches, 1 common pleco @ 7 inches. Every 4 days I do a 25 gallon water change every other water change is a thorough gravel vac. I have not treated anything in this tank. It has been set up for about 2 months. I have a rena xp3 on it. I clean the filter media about once a month and skip a water change when I do to allow maximum rebuild of bio media. I think that's it. So I had a male g/t jump 2 months ago so I went and got a replacement. I set up this tank and put the two big g/ts and the r/ts with the pleco in. And started my cycle. Cycle went normal everything was fine eccept the new g/t he hasent eaten at all eccept once. I feed a large varied diet of flake pellet and frozen. He's allways been real skinny his stomach is sunken in. And sometimes if you look close he has a little transparent whitish colored stream of poo I think coming from his vent. So anyone feel free I want to get this fixed and get him healthy its bee 2 months now. Thanks