Mirror room

[Sm0k3r]

Did any 1 of u guy's tryed on a mirror room? that will be reflectiv! Any 1 who know or he tryed that 1 plz let a comment here ty

Peace

[midgradeindasouth]

Seems like Roseman tried it before.

I want to say that he said he prefered flat white walls to the mirrors.

[green_nobody]

a mirror is a reflective surface covered by a glass plate - this is now light absorbing again, making a mirror everything else then a ideal reflector for light.
And if you come at me now that the light-bulbs in your cars lights are housed to in "mirrors" too and that i must be wrong - i'm not. your headlights have a macrolon (same stuff your CDs are made from too) reflector that has been gas plated with a 4µm strong layer of silver - it used to be silver. that is also why it is so important that no water gets into your light - silver would start reacting then and your headlights would go dull. so you don't have mirrors in your head lights

[Hobo]

a lot of mirrors are just mylar covered in glass, no point in adding something else for light to pass through before it gets reflected. Mylar probably works the best at reflecting light all on its own, flat white paint also reflects a lot of light.

[midgradeindasouth]

I would be willing to bet that flat white walls are as good if not better light reflectors than mylar.

[Hobo]

that may be true. but mylar is probably used more just because it is about 200 times easier to set up.

Originally Posted by midgradeindasouth

I would be willing to bet that flat white walls are as good if not better light reflectors than mylar.

[tokecrazy]

I dont agree,Mylar dose reflect about 95% of the light.BUT it is hard to get it flat and flat it reflects the most light.I think white paint reflects about 90% light.You can wash a painted wall and mylar it will streak when cleaned and may tear while cleaning.Mirrors reflect less than paint,The light has to go through the glass and than reflect back to the plants.It loses some of the lumes.In small grow area mylar will work very good if it is FLAT.Flat is the key to good reflection with mylar.In all of the reflective material that's on the market in my opinion white paint is the best in a all round use and manitenance.Midgrade the roseman did a post on how much light mirrors reflect and He said the same thing white paint is better than mirrors.You got a good memory there midgrade. PEACE

also in mirrors what you might think is a flat even reflective surface..actually most mirrors have "hotspot" where light is pinpinted to like a magifying glass an can cause burn spot on plants...peace

[Mogie]

Flat white paint is cheaper, much easier to apply and will give you a nice even reflective surface.

What I would like to see is someone painting their walls red. Red light is the complementary color of green (the color plants reflect). Thus it is reflecting the color that is most absorbed.

I think that makes sense? not sure because of my state of mind but science class taught me something I guess...

[Mogie]

You want the color that reflects the most.

But if the plant is reflecting a certain wavelength and the walls are too then that energy is being lost to heat... I think that makes sense...

So to reduce heat couldn't you just have the wavelengths that have maximum absorption?

[tokecrazy]

Tried and true there Mogie,flat white panit or panda plastic,both do the best job for the price and the easy to clean easy to install and the most reflection all round. PEACE

[kennkenniff]

mirror cost about 2.50$ a sq ft my is like .25 give or take

[madmax4twenty]

What I would like to see is someone painting their walls red. Red light is the complementary color of green (the color plants reflect). Thus it is reflecting the color that is most absorbed.

I think that makes sense? not sure because of my state of mind but science class taught me something I guess...


makes since to me. cool concept for mythbusters

[jangel]

it might work, If I remember my color theory correctly. What color is to the eye is all the colors absorbed but the one bounced back at you, so white actually reflects all the colours and red reflects only red, black absorbs all the colours, etc. Interesting concept. Limitiing though as you might have problems with vegging in that room as for veg you need blue.

Hey check it out and report back what it does. You never know!

[Jimmyspaz]

Super-white matte paint=94% reflectivity. I've been using it since I found this out. The other factor with matte oaint is that it diffuses the light so it is reflected in many directions and so gives better penetration, mirrors ( 90% reflectivity max) or mylar reflect in stright lines, and so cause hot spots. High school science people.

[green_nobody]

Originally Posted by [LEFT

crewdude[/left];31004]But if the plant is reflecting a certain wavelength and the walls are too then that energy is being lost to heat... I think that makes sense...

So to reduce heat couldn't you just have the wavelengths that have maximum absorption?

Okay, theoretically is this possible to produce only the spectrum plants can use but technically realized it will cost way too much if you want to do it with the same light energy as you yield for example with an 400W HPS.

So, sure there are loses with the full spectrum of light used. but if you look at the theoretical lost light spectrum and the emitted spectrum of a HPS bulb you will notice that not as severe as they may sound at first.

An if you turn this around now in heat production by absorption of reflected green light you will notice that very limited.

In addition you should look at more obvious heat source then light absorption: the light source

Depending on the light source you use you have different rates of light output, a 400-600W HPS will yield for example about 150 lumen per Watt consumed, other sources as LED or fluorescent types yield for example less then 100 lum/W and therefore will produce more heat to produce the equivalent lumen a HPS (<400W) puts out.

If you have a real heat problem caused by lights, you have a problem of inadequate heat exchange actually as your space is too small to disperse the heat by its volume, disperse it via radiation, or air exchange. And the simplest solution is to provide a adequate air exchange by adding a ventilator, filter and an intake to your space. (besides the fact that it is in general from huge benefit to have a proper air exchange in your grow room as plants need CO2 and O2 to prosper)

[green_nobody]

Originally Posted by madmax4twenty

What I would like to see is someone painting their walls red. Red light is the complementary color of green (the color plants reflect). Thus it is reflecting the color that is most absorbed.

I think that makes sense? not sure because of my state of mind but science class taught me something I guess...


makes since to me. cool concept for mythbusters

Nope, the is a little mistake in this idea as the red pigmentation of this paint will not only absorbs the green spectrum but everything but the red spectrum it reflects or why we see the wall as red object. And since all light besides the red is absorbed then this wall heat up even more.

paint it white and you have the full mix and almost complete reflection of light which keeps the wall from heating up due to absorbed light. If you grow is fitted with white walls, either paint or TiO2 containing plastic foil as panda foil, these walls will only heat up from radiated heat, mainly caused by electrical equipment as lamps, fans, cords and what else is in your grow.

[jangel]

Originally Posted by green_nobody

Nope, the is a little mistake in this idea as the red pigmentation of this paint will not only absorbs the green spectrum but everything but the red spectrum it reflects or why we see the wall as red object. And since all light besides the red is absorbed then this wall heat up even more.

paint it white and you have the full mix and almost complete reflection of light which keeps the wall from heating up due to absorbed light. If you grow is fitted with white walls, either paint or TiO2 containing plastic foil as panda foil, these walls will only heat up from radiated heat, mainly caused by electrical equipment as lamps, fans, cords and what else is in your grow.

.....what he said...LOL!

Love ya Green!