The old bubbler system eh?
Those work good. I see you use a home made style lid for your pail. I can get you one that's molded all in one. The lid fits over a standard 5 gallon pail, and has the mesh pot moulded right in, so no chance of the basket falling through. They're only $5 each of your interested.
But nice sytem, how big do you grow them in their?
Ever though of switching to a drip sytem, your like $25 away from one with everything you got there. And they'll produce better yeilds.