markandrosie;3339274; said:Why is that?
markandrosie;3339292; said:The oscar has been separated from all of them now. The tanks 400L, i do clean it often and test the water and haven't had a problem so far![]()

this is not true at all .. i have 2 o's (8-10") 2 red hooks 5-7") and a royal knife (14") and a plec (14") all in the 130 and i have no problems at alloscarsftw;3339279; said:Messy, your Oscar and other large SA/CA cichlids are messy enough...
2x plecos + oscar = nitrate level off the roof...Unless you have a 180g+
What size tank?