Originally Posted By: Bill Cody
With only 80K gallons it won't take a very big compressor or diffuser to mix the pond - 1/8 hp could do it or a big lily pond air pump. A 4 ft deep pond will not strongly thermally stratify to the point that you get summer fish kills.


This is hopefully my last question. When you say "big lily pond air pump", are you refering to something like this http://store.aquascapeinc.com/p/pond-air-4?pp=20

It seems very cheap compared to a 1/8 hp pump, but it also seems to be on the large size of ornamental pond pumps. Thoughts?