Thanks for the comments Rob.
No vent going outside. Just the exhaust vents on top right hand side and the intakes on the back/bottom of the right side.
That shelf is for the mothers. I want mothers above and below it. So I am not really wasting space. There are 2 CFLs for the top shelf and 2 for the bottom. That T5 puts out some decent light for veg and some hist the mothers as well. I will most likely put up one of the pull down partitions to block most of that life from my mother shelves. I was thinking like one of those baby sun shades for car windows or something....
I did build a pump box too, but that dual diaghram pump (320GPH, only like $60 or $80) is quiet that when i have it running, I dont hear it when the cabinet doors are shut. I will be adding a smaller air pump as back-up that will run all the time in case of main pump failure or I use that system shutdown deal....Here is a more detailed pic of that area..
So maybe the fatmat is working..I just have nothing to compare it to. The cab is compeletely silent except for the air movement you hear that isnt noticble over a room oscilating fan...
and that verticle duct is just where the Co2 tank will be...
I am worried about temps of the res if i go dwc as well. Temps in the veg chamber where the fans are run at 74 when i have a 70 ambient room temp. I was thinking about placing the box for the pump where it gets rushed over by the intakes to ensure the air is 70. Other than that i guess regualrly topping off w/ cooler water, i dont know. What do you use to keep your res temps in check?