you dont need a 65 gallon tank.well you might but first what type of pleco is it. biobaby that rule is um..... just don't use it. like 4 angelfish in a 18 gallon nope, you need a 29 gallon for angles. 2 dwarf gouramis in a 6 gallon nope. YOU CANT PUT A 24 INCH PLECO IN A 36 GALLON TANK! that...