Back with more pics and a update on first grow. Comment please

So we are on day 24

PH: 6.0
PPM: 800
Air temp: 90 trying to figure out a way to lower
Water temp: 72
400w MH
DSC

I am really needing to pull more heat of the bulb I guess. I am also curious about the spots on one plant. I looked in to it and found a great forum talking about all the neut relations to plant symptoms. Reposted that in my journal if you want a great read on what your plants are trying to tell you. So I just corrected some neut problems and now need to lower temps. Really would enjoy some feedback if any is around.

i dont think the reflective surfaces are necessary underneath the plants. the underside of the leaves are filled with stomata and have the spongey mesophyll in it.. not very useful for PS, but rather co2 uptake.

looks good. Im not good with plant problems. so cant help ya there.

are you running any kind of AC to the area. def need to, that 95 degrees is too much. the yellow isnt that big of a deal, its all bottom yellow and new growth, the plant is just redirecting the nutrients to neccessary areas.

Yea I have a couple fans going and now I'm installing a in line 6" fan to pull heat off the fan faster. Think this will be enough?

a inline is necessary for sure to pull the heat off and out, where are you running the exhausted air? and i would still say AC in is ncessary to lower the temp