couple quick questions

I about finished prepping my space. Have the walls primed and ready for a coat of paint. I have some semi-gloss exterior white latex laying around. Question is any difference between semi-gloss and flat?

use the matt. gloss actually absorbs light.

use the flat white.Its more reflective for light and will not produce uneven hot spots like semi or gloss will.Make sure paint is well dry and fumes are gone before any plants go in.Good grows to you.

gl with your grow . mylars the best bet but aint will be fine.

black and white is good too. Or even better is white-black-white, sells about the same price as the cheap mylar.