Well as mentioned in the other thread I am building a Biopod (Nockypod
) almost complete as we type, at this stage it has cost me a grand total of $0 as made from leftovers lying around the yard, but 1 large and 1 small snap lock lid bucket (Local chicken treat sells the 20lt buckets that they get margarine in for $5) some 1/2" avery wire (about 15" square) and about the same amount of foam sponge, about 1mt or so of 40mm PVC, 1 x 40mm elbow and some cardboard and some very technical interior designing, as mentioned in the other thread it is the internals that will make it work...............hopefully, but will be finished this arvo or in the morning (if work stays this quiet), will post a pic of the finished effort but the internals will be like KFC, until it is proven to work anyhow, may need to warm up a bit, but have BSF in my worm farm now anyhow.............stay tunedHopefully will get some production until the BYAP one is on the market, or I may give Joel a sneek peek at my design
but is almost together just need the work to quiet down 
but all going together tomorrow, waiting for a hole saw from Perth, I found three failed home made jobs on google after flicking through many pages, have taken the best part of 3 different designs and made this effort, should be able to post pics tomorrow.