Well I'm looking to the future, and expanding. I normally do 2 at a time. Had an issue during germination. I did two more, and 3 of the 4 ended up popping. I didn't want to waste a seed that germinated. I was gonna put 1 in a solo cup, but remembered I have 2gal bags. I figured I would hand feed it. I forgot I had 2 never used xl autopots sitting on the shelf. I use 2 xxl so I can use my grow bags. I put it in, and now trying to turn them is tight in a 2x4. If I could get tubing cheaper I would redo so I could arrange better. Not a must, but be nice. I'm on a tight budget for the garden so always looking to do it cheaper.