resun lp200 aerator in 30 cum concrete pond.. #biofloc Published 1 year ago • 2.1K plays • Length 0:22 Download video MP4 Download video MP3 Similar videos 1:30 testing 2x air pumps resun gf250 in new pond (no good abve 0.5meter depth). resun lp200 is proven.. 0:30 fish pond water preparation & conditioning... resun gf250 not good for more than 0.5m depth.