| I have 2 koralia 4's in my 40g and love it.. I want more flow.. I'm buying a 50 tall tank soon so I might bump up my return to a mag 9 for a lil more flow.. I like the koralia cause of the wide flow they give out.. at first I had 2 seio 620and that didn't seem like enough flow.. in other word's "I LIKE'S!!" | 
