Cecil.
My evil plan is simple.
I'll fill the bottle with water, turn it up side down, and place it in my IBC with the air leads inside. I will then set it to the depth I want to test and turn on the air pump and time. The beauty of this plan is that I can test it at several depths and know how the pump is doing at those depths.
And just so Bill D. does not cry foul, I plan on using a NIST calibrated three liter bottle and a NIST calibrated chronograph.
Why not just spend a few bucks on a Dwyer flowmeter? I think I have 6 of them here for air, but they only go to 25LPM. I could send you a couple and you could set up 2 with a common inlet and common outlet and get to 50. I gave esshup 4 of them for future use.
25LPM is 0.88CFM. If you set your MBBR up with proper dimensions, right type of diffusers and proper fill, should only take 4LPM at depth per cubic foot of media to make it work really well.
Sorry, but I have a bad habit of calling engineers that do this for a living. Some of the Chinese media out there, you really have to beat the snot out of it to make it work tho.
Dang, out in the woods and where did all these bugs come from?
