well i decided i wanted a water pump at the pond also so i decided to run the air pump at the ponds edge. also i was a little worried about air line freeze up in the winter with so long a run of air tubing with little drop. now the air tubing will be dropping straight into the pond from the pump house.
this past weekend i ran electric and installed 2 4x4 posts to support my pump house so i'm pretty much at the build process now.
all i need to do now is figure out air tubing and diffuser(s).
i was thinking 2 9" membrane diffusers with a check valve to help prevent freeze up. are the check valves built into the difussers or is that something added separately?
as for airline, bigger is better? i was thinking 75ft of 1/2 or 5/8.
