DJ Short Flo and Bodhi Rainbow Serpent

The clones finally had enough roots to get potted up into solid medium! This is premixed, bagged Mother Earth 80% coco coir 20% perlite blend, with a bit of extra perlite added to bring it up to around 30% perlite. The pots are tan fabric instead of the usual black but they are the same stuff. The roots on Flo 4 were not as well-developed as on Flo 1 and it looked like it was not getting enough water. The humidity in the tent was a bit low, so I put some water on the bottom tray to try to increase the humidity a little and prevent the leaves from dying off. I'll let them get well-established and growing vigorously then switch them to bloom. I don't want them to get too large because the tent is only 2' x 2' and 5' tall. I didn't top these, they are clones and they are from side branches, so they are just growing that way. The Rainbow Serpent clone from last week looks very male so I tossed the clone in the bin but the bonsai mother is such a pretty little plant that I haven't gotten rid of it yet. As per a commenter, I can't be positive that it's male unless I put it into bloom. I am wondering if I put it into the tent with these two once they are on 18/6, then check it every day, will I be able to catch it on time before it pollinates these it is confirmed to be male? It will be well below the canopy of these, so less chance of the pollen traveling upwards even if an errant speck does get released. Could I put something transparent (like a big glass jar) over it to contain any pollen but let the light in? It's just a little bonsai plant. If it turns out to be female, I'll reveg it then I can take a clone to grow out later.