I'm very picky about my perpetual. I have four plants only in my main flower tent. I like to keep things so the plants barely touch each other. Lots of room underneath to feed (I enjoy hand feeding), lots of air movement, and it makes it very quick and simple to empty the tent if I need to.Nice I just got set up to do a perpetual photo grow now. Very happy can toss autos along with mothers and clones
I still use my old 2x4x5' with a 400W for veg, so I'm limited in space. I typically have two phases of plants in there. Plants that are on week 1-3, and plants that are on week 4-8. Just after I move plants from veg to flower, I have ample space. After four weeks though, the space vanishes. I usually have one extra plant per perpetual cycle in veg. When I move them to flower, I choose the best two, and scrap the extra.
My experiments operation though, I have plants at all manner of varying ages and phases. It's even worse in my veg experiment tent lol