I don't know where my receipts are, but if AirPots are expensive locally, find them elsewhere. The 1L containers I started in are $3, I don't remember the others, but <$10/ea. Happy? Yea, I'm happy. I'm excited to open them up and see the root mass after harvest. I've been bottom feeding for almost all of flowering, so out of a batch of ~4gal, they absorb 0.5-0.8gal each. The 7.5L AP's just fit inside a 5gal bucket(I use a "food safe" 5gal). I run a flooming pump while the nutes are mixing, usually 10-15min before adding anything, and up until just before I dunk them. The "waste" of making a 4gal batch (every 3 days) means that I'm going to run out of all my nutrients except: CaMg+, PK13/14 & Drip Clean. The pH down that I have will last an eternity, I'm happy with that too(SaferGro). I like the flushing effect of the dunk and drain, over time it does let coco and perlite out through the holes and it makes more of thimble shape inside the AP. I dunk them down to the top of the coco, the roots are holding the coco together now, not the pot. Stalks are about the size of my pinky finger.
The pots are ~11" tall, above the tall one is about 21" and the other about 18". Out of my 48" total, they're taking up ~32, add the thickness of the panel (~3") and the extra height above the light that I can't use (~3") and it makes sense why the light is only about 10" away from the tallest tip... which is up against the back right now. I like it there, it can share the happiness of 1100+umoles with siblings.
No matter what, I'm happy to see what a plant can do that's <24" tall. The space is 21.75" wide, so they're "square".. as tall as they are wide.
Thanks for the kind words. They're definitely frosty, and I'm hoping decently dense. They are leaning now, I'm taking that as a good sign. It's hard to get a good pic with the phone, but looking up is when I get all giddy about the trichs.