I would like to know if I do a closed loop for water turn over do I still need power heads. I don't like the look of them and I am thinking about upgrading my mag 24 to a hy2600. this will move more water thru the length of pvc ( about 10 ft ) than my mag 24. If I do thisI will have the mag 24, thinking that I would drill a couple holes and make a closed loop. Will this be enough water movement in the tank. The tank is 150 gallons. The reason I am not sure is because the closed loop will be on the back of the tank and I have about 150 lbs of rock scaping. I still have some finish wood work to do and of course add many corals, I only have a few mushrooms right now.

