Good to hear from the pros! And seraphim19, it's the outdoor/indoor carpet, the stuff you golf on or have on a patio outside, so do u think that would matter? I do like the idea of putting reflective material on the ground, I just don't wanna glue it directly to the concrete so I'm a bit iffy still. Now I know you can put cfl's within inches from the plants bcuz they don't emit a ton of heat, will it make a huge difference in the growth of the plants if they're 6-12in away?
Have you seen the reflective bottom sheets they supply grow tents with? its basically mylar folded and sewn up to create a reflective tray. I made one myself with a couple of meters of mylar and some staples. It reflects a LOT of light back up and if I do spill anything it is easy to take out, clean and dry