My pond is 1.5 acre 9ft deep with bass and BG. Just got the Gast 0523-1010-G582DX pump to aerate the pond. I plan on getting the FlexAir� disc diffuser. My question is about the intake filter for air. The pump came with a small metal porous piece about one inch for the intake. Do I need better filter or can I just use what's on it now?