Please I dont know what happened, I was changing his water and cleaning his tank like normal. I put everything back and put in his new heater I bought him. Lastly I put him in and he just went spastic and swimming in every direction, upside down and falling to the bottom and going fast. I knew he was in distress and tried to get him out but he was just going to fast and the net was catchign on to the stupid heater suction cups. By the time I got him out he just wont move and is on his side. Im like a wreck right now. I dont know what I did wrong..