Grow Mediums Help with building a "perfect" URDWC/DWC system

[Groff]

Ideally for plants under LEDs the room temp should be 85 with the range 80 to 90 degrees F, humidity at 40% for best transpiration

My room temps sit between 64ºF night and 79ºF day, depending how hot it is outside. Even with HID's I never went over 86ªF. Humidity is around 45-65%.
Mind expanding on the temperature for auto under LED? I thought those values were way to high for optimum growth.

 

[Muddy]

Temps can run a little higher with LEDs because the heat intensity is lower than HPS. I'm kicking myself for not book marking it but someone posted a very informative video a couple months back done by one of the LED manufacturers. They found that a temp of 85 and RH of 40% under LEDs provided the optimum transpiration rate. At that combo the plant transpires at a rate that optimizes nutrient uptake. I've since dialed up the temp in my outdoor grow box and even though I have no humidity control, I've not experienced any ill effects. This was good news to me as I normally have shut down my box from the beginning of June till mid-late Sept. because of high heat. Outdoor temps have been high here this week, and temps inside the box are hitting close to 90 but still within their suggested range. So far, so good. This should also allow me to start back up in the beginning of Sept., so I'm picking up a month on each end, enough time for an extra grow every year.

 

[User K]

http://m.youtube.com/watch?v=oq72SW_I2qo

Hey bro check on this link, this guy is an awesome grower, check out his DWC, this guy pulls 1.5lbs per plant in DWC, this is his new RDWC, may help.

 

[Groff]

http://m.youtube.com/watch?v=oq72SW_I2qo

Hey bro check on this link, this guy is an awesome grower, check out his DWC, this guy pulls 1.5lbs per plant in DWC, this is his new RDWC, may help.

BRILLIANT find! Thanks Kip!! Wow, only just scrolled though and this is just what I needed! +Rep
Downloading as I type, will watch it later.

Whaaaat? 1.5lbs ?! Insane!