im super woried about the barra dying his eyes are starting to cloud u abit and my amonia is at .50ppm i have 4 filters on the tank a 1000lph canister a 1000lph internal another 1000lph internal and a large sponge filter thats like 3100 lph of filtration on a 600 litre tank yet my amonia is still high and my fish are getting sick except for the jar apart from his fins he really starting to p**s me off the tank has been running for a year i dont know whats wrong i dont even know y the tank isnt crystal clear its clear but not crystl clear