pump: smartpond 300-500 GPH Water Garden Fountain Pond Pump $45 at Lowes (Christmas present to myself)
Shop smartpond 300-500 GPH Water Garden Fountain Pond Pump at Lowes.com
it’s a 300-500 gph submersible pump. the only trick to connecting the ball lock is the small tube that connects two gas posts inside the corny (red in the attachment). the corny doesn’t have any water in it. I have an extra beat up corny and use thumb tightening hose clamps.
for cleaning the corny and fermenters, the pump shoots the water straight up. the corny/fermenter sits inverted on the bucket.