Rio 300,filtering 2800 ltr per hour,will post stats tomorro but are always perfect other than high ish ph,well 1 of my 4 clowns is a bit strange,he seems to be sticking his barbels up like the top set not the lower,its like if u pull your top gums up to show ur teeth-only way to describe it,he could do this for hours and then return to normal,he still eats while like this,i dont know if its on purpose or what?,also when he has barbels up u can pretty mush see into the mouth?