balton777;2303534; said:You don't need if your return valves are moving the surface as you say. You're just wasting electricity.
They have been off now for one full day and all my fish seem fine , so i think ill just leave them out the tank .
But like i said before ill keep them off for 1 week and see what it's like in that time and then put them back on or just leave them off after the weeks over .