Black absorbes heat?

Ok so ive started re-building my grow box. Its timber framed with a split level (grow & bud).

Ive heard that black cars get hotter than white cars. So i suppose that black paint would absorb heat? right?

So what i wanted to know was if i painted the inside of the grow box BLACK would the tempreture inside the box drop?


Off topic: what sound insulation should i use to fill the frame to make the box quiter?

P.S im also going to be using mylar or sumthing like that to line the inside...

Il try to put get a pic off my phone to make it a bit clearer...

sorry wrong section as well...

Hey Hey!

it would absorb the heat but its got no where to disperses.. if anything it will make the room hotter. Its better for it to bounce of the walls and get removed by your fan... plus ul be loosing out on any reflective light on ur plants using black as a bass colour..

if your box in resonating by the vibrations from ur fan.. either put something heavy on top of the box and/or place nails or rubber feet on the bottom of the box.. this will disperse the vibrations.. also you could hang ur fan from some thick rubber bands. this will also absorb any vibrations considerably.. :)

I always use black poly for my floors(basement pink board insulation underneath, to keep the roots in soil warmer and active. A rootzone temp. 5 degrees higher than air temp is best. Not a necessary step in beds, but pots or grow bags dont contain enough soil for optimum bio-activity (a.k.a. heat)

ok cheers for the info

this makes building the thing alot eaiser and less work...

Quote:

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Originally Posted by snow owl

A rootzone temp. 5 degrees higher than air temp is best.

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The rootzone would prefer 65-75F.
:pimp:

black doesn't absorb heat. It changes light energy to heat. your better off reflecting all the light and venting the heat with a fan.

heat = energy
light = energy
Whats the law? Energy never dies or ceases to be, it just changes forms.

white = reflection of light energy
black = absorbtion of light energy

Why then, would you want to waste that potential energy. Wasted wattage, wasted resaources. Wanna lock in that heat for whatever your reason? I did too. Theres this stuff called reflecti-x (lowes). Its reflective insulation. 97% light reflective, 7 layer insulation - fairly sturdy i suspose.

Check my cab in signature for pics of the stuff, its lined in it. I trap the heat in my cab in the top section via reflecti-x and a 1/4" plexi glass heat sheild w/ a 2" gap up front. Fans are expelling the hot air which is trapped and held away from the plants keepin the overall box temp lower.

4 PC fans cfm rating for the entire cabinet, sucks. 4 PC fans for the now smaller sized lighting area, good. I reduced the size area i NEED to move the air from (where its hot) and the 2" gap in the front allows for air flow from the bottom.

Hope it helps?