Considering that pleco has the ability to get to 20" in a HEALTHY, APPROPRIATE-sized tank, you are doing it a disservice to try to keep it in a 30.
A pleco needs twice the filtration of regular fish and frequent (weekly) water changes.
But judging from your past replies I guess you'll have an excuse as to why it can't be done.
A pleco needs twice the filtration of regular fish and frequent (weekly) water changes.
But judging from your past replies I guess you'll have an excuse as to why it can't be done.