Two things come to mind here:
1) A better water source/well is needed unless you plan to boil your water
2) Aeration from a bubbler setup gets much of it's oxygen from the surface to atmosphere interface so keeping the area open continuously is best.
In WI we have quite a few lakes that get winter aeration to protect the fish from low DO. In MI they aerate in the summer only from what I understand as the DNR does not allow winter due to risk of accidents.
What has been done in WI is to simplify the systems. Move the air and skip the fancy diffusers. Diffusers will bio foul and require maintenance. I was highly involved as a volunteer with the installation of the "local" aerator that has nearly 4 MILES of tubing submerged.
What I am trying to say is that it sounds like you may be able to consolidate to a single machine and a substantial length of tubing with multiple discharge ports. It's not rocket science, it's all about turning the water over and maintaining an interface at the surface for aeration via mother nature.
Then again, since you already have multiple micro units available, you may just maintain present course. I'd suggest looking into some sort of renewable energy power source for operation and keep them running 24-7.
Last edited by Hesperus; 11/27/13 10:43 AM.
