I actually have plans on making a homemade one myself…
Just get a 4x8 white panel from Menards and cut it down to 2×4 panels, it’s just gonna be a square/rectangular upright box no fancy corners…
Buy 4 of these 4ft. 2 bulbs each LEDs for each corner of the chamber…
Buy 4 of these 4ft. single bulb LEDs to put in between the corner double LED bulbs…
Then buy 2-4 of these LEDs for the top lighting…
There you go, a homemade Phototron which will be way brighter than the one on the marketplace for $200 and way cheaper too
Oh yeah, go to a Dollar Tree and get yourself a big $5 pot for soil or SWC growing in your new homemade Phototron…
This is my plan anyway for next winter grow…