Looks good but maybe buy some cheap 2 x 3s instead to save money. Buy extra so you can put in some x-bracing and also finish the box frame on the top. The way it is now it looks like it would "rack" easily and be a non-rectangle in no time.
I like the intake design at the bottom and the fact that the plants are elevated. Light trap bottom is easy enough to work out later.
only thing I can think of is maybe make a lazy susan to make maintenance and watering easier (if hand watering).
I just freed up a 400 and will be doing a similar design to see if a vert 400 will out grown my horizontal 600. Next step after getting feet wet with the 400 will be vert 600 and I'll crop one of the grows every 30-35 days.
Lou, why didn't you drop me a message and point me to your new thread?
Looking good my friend! You're gonna love those MAT x ChemD... I got some from a local boy of mine... I had to get the MAT mom I liked the cross so much.
Keep it green, and purple and orange... lol beautiful plants bro.
I feel like a serious wrong has been corrected... A crisis averted... My bulbs are back to vertical
LD