you can check my sig out, I had one grow with cfl and this one is hps.
Depending on how you grow it, it can make a big difference. I went hps for flower and i dont regret it at all.
My girls love it.
Get a HPS for flower, you wont regret it. You can check out my grows in my sig, I used all cfls for the first now the second i switched to a 400w hps and lst'd my girls looks 100% more amazing.
looks like over watering in some pics, some nute burn and maybe temp problems.
Whats it like for temp in the box,? and how often do you water?
How big of pots, how much water?
Take a duct booster fan right off the top of your a/c coil in your plenum, right to your grow area, shit will stay nice and cool.
A little tip from a mechanical guy.
well, its family that im mostly worried about, they started to complain about some smell in the basement lol.
Im going to fix it, might cost me a lot of money but its getting done.