Quote Originally Posted by burnable
if the leaves still have a yellow problem, it's prolly a (N) deficiency. it's hard to grow good plants with hot ambient temps. it's pretty impossible without an air conditioner (most increase humidity, but hps lamps cook it out again pretty well)
a/c units do not increase humidity.

Moist soil, water on the floor, open reservoir, transpiration- those are things that put water into the air.

Did you ever look at the back of a running a/c and notice it dripping water? That's water that has condensed OUT OF the air.