Originally posted by BarO:
$90 sounds too good to be true to me too. I believe it was a 220V pump, which I never researched though.
Wouldn't the bubbles pull the anoxic layer to the top from only 2' above the bottom? They sure move a lot of water. My system is about a foot off the bottom in the deepest part of the pond(NE Texas).
Could be but I'm no expert and haven't raised my diffuers to know. All I know is why raise them and take a chance if you don't have to? I raise bottom oriented species (yellow perch) and want them to be able to utilize as much of the pond bottom as possible.
