Ok, I have had a Red Devil Cichlid for almost one full year now, At his first few months he was living fine in a 10 Gallon whisper filtered Aqaurium, But as he grew... I relized he was taking a sudden "L" Shape apperance, I knew it immediatly as *gorwing disorder, So, When I moved to Kentuckey in August, I bought a new black oak cabinet/Stand, and a nice 40 Gallon aqauriam. Now, the L shape is gone, and hes straight and normal, he swims fast, hes fine now. The bottom is filled with Earth Colored Gravel, He has one large tree/stump type thing in the right of his tank, he hides behind it sometimes when he sleeps, but he is always jumping at the sides of the tank to meet me! He has a large swimming environment, and hes only got the one obstacle, which is the stump tree thing. Hes so mean, every other fish I have tried to put in, he either eats or tears apart. He even ate his sucker fish. So, Right now all hes got with him his one VERY large apple snail, He cleans the tank nicely, but he gets knocked around alot by Mr.Meanie. I currently feed him Tetra Cichlid, Cichlid Sticks. There big huge sticks loaded with vitamins and stuff, I usually break them in half however, this makes them bite sized, But, Recently, hes been breaking them in half himself quiet easily. Right now he looks to be in good health, his tank is kind of scuzy, theres stuff floating around when he swims really fast he knocks it up, But he doesnt seem to be bothered by the nasty tank, like many Cichilds are, They poison themselves. Right now hes got one Penguin 350 filter, with two large wheels that each spill out water, and a large filter head that sucks up water nicely, I dont turn on his overhead lighting, Because I heard it grows Algae...? Should I buy a LIFEGLO fish light? Does that supply them with vitamin through the light? Also... I have filter trouble currently. Only one wheel is spinning, and barly, his tank is barly getting filtered, because his filter is soooooo gummed up. Anyone know any good ways to clean a filter? Thanks, So long.