The best grow I had in containers came from useing 5 gal. buckets. These are what I use in my tank designs as net pots are a joke for me. I use a variable bit and drilled out many holes ranging from 1/4" to 3/8 some at 7/16 of an inch. Then use a blowtorch to smooth everything out.no burrs or rough edges. For a run of a medium I was asked to use I had to use some batten they use for upholstery.It comes in about 1 1/2' thickness. I learned to peel it of in 1/8" pieces. This kept the medium from falling into my tanks. We had some extra buckets and plants left over that was not needed as backups for the big transplant. The others we threw out in a friend's back yard. Killer grow for her. We checked out the rootballs when it was over and it worked the same as airpots except ours were reusable,easy to sterilize. Buckets were free from local donut shop. JK
