I dont think he starved to death... He was always eating it must have been something with that water change.. I did another change with no RO water and havent had a problem since.. The pelco was only 2in long had him for over a year so he was still ok in that tank. I think it might of been that i never used RO water on the freshwater tank, i got the unit for my saltwater tanks and thats what it has been used for with no problems... I have had this tank for years and never had a problem like this with 4 fish dieing.. I got a new pelco today, the remaing fish seem to be doing ok ... The RODI unit has 3 carbon filters on it.. I have never used dechlorfire with it since i got it because i thought that it took all that out. The food fiber for the tank comes from this large plant in the middle it takes up alot of the tank. the leaves that fall off the pelco usually eats... I dont know what plant it is just a potted one from petsmart which has been in the tank for over a year..

Thanks for everybodys help!!!!!!!!!!!!! It was just werid never had that problem before.. I have had that tank since we moved here over 16y ago so this was the first time anything like that has happened..