From my brief time reading these forums, it is clear that there are some very creative and knowledgeable growers here when it comes to keeping as many plants as possible happy and healthy in very confined indoor growing spaces. So I thought I would ask a question which has been on my mind for years, but have never found a conclusive answer to: What is the smallest viable tent/cabinet set up from which you have successfully produced open pollinated seed?
For a little background, I grow in a continuously recycled / composted living soil outdoor and have done all my previous seed breeding that way through open pollination. I have always wanted to expand the number of open pollination hybridization runs for my own lines or landrace/heirloom reproduction runs I am able to do at once and in a given year. I have a 3-tier rack of LED seed starting lights that I currently use for seed starting / phenotype selection / mother plants but they are open and not suitable for pollination. Ideally the tent/cabinet system would be quiet, scentless, and small enough to fit in a bedroom, while offering space for 2-3 completely isolated open pollination runs at once. I am especially interested in DIY options / custom set ups.
I know I’m asking for a lot here, but any help or links to relevant info would be much appreciated.