carolinafishkeeper;738356; said:some causes of HIHD is to much consumption of goldfish,especially with RedDevils and Oscars, or poor water quality.![]()
carolinafishkeeper;738603; said:sorry wrong post![]()
Some aquarists actually bragged about how old the water was in their tank.
and did water changes once every moth or so back in the day. 
. But I bet at least 75% of the people on here have done a bunch of the same things. Unless they started recently when they were adults.