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Using mirrors in your grow room?


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#1
fizzx

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Ive heard that using mirrors to reflect light to the bottom parts of the plants works very well to increase the overall yield turning the smaller nugs into bigger, more dense nugs...Now I would be concerned about hot spots but i heard that that doesnt happen from mirrors, anyone have any info or opinions on this? what do you think?:confused::confused:

#2
ganjaganja

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well, i don't know anyone who has used straight up mirror's in the grow room, but people use mylar, tin foil, or white paint.

I prefer white paint as it stays up there forever, doesnt crinkle, in my opionin is easier to put up in MY room than mylar.

You are correct about the hot spots, i have seen that occur with mylar, and i would imagine it would occur with mirrors as well.

how big is your room, what are the exact dimensions?

#3
fizzx

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well, i don't know anyone who has used straight up mirror's in the grow room, but people use mylar, tin foil, or white paint.

I prefer white paint as it stays up there forever, doesnt crinkle, in my opionin is easier to put up in MY room than mylar.

You are correct about the hot spots, i have seen that occur with mylar, and i would imagine it would occur with mirrors as well.

how big is your room, what are the exact dimensions?


12'x12'

#4
sbud makenzie

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from the research ive done, Glass eats light, stick with mylar, or for less hot spots, plain white!

#5
STUPIDS

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Smooth mylar is best...mirrors absorb about 50% of light...if you use paint, use an semi gloss or gloss, never an eggshell or flat color...and tinfoil is a waste, do youself a favor and go to the nearest copier machine, copy tin/aluminum foil...it will come out black because it also absorbs light.

#6
ganjaganja

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go to the nearest copier machine, copy tin/aluminum foil...it will come out black because it also absorbs light.



that is very interesting, i did not know that, if you photo copy mylar does it come out dark or bright?

#7
itallburns

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for under you canopy make a bunch of different cardboard panels covered with mylar,:smoking:

#8
ganjaganja

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for under you canopy make a bunch of different cardboard panels covered with mylar,:smoking:


you need to be careful with light on the underside of your leaves, you can dry out, or create really bad hotspots on with too much light on the underside of the canopy.

in nature, light does not usually reach the underside of leaves, and with indoor growing, we try to simulate the outdoor environment as close as possible. That being said, it is understood that the underside of plant eaves are not used to getting light, and they are not very prepared for it, so it can cause some damage to the plant.

just something to think about......

#9
trogdor4564

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just use white paint. mirrors are the worst thing to use.

#10
itallburns

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ganjaganja i never really though about it like that, thanks for starting that thought process in my mind before i start frying shit,:smoke:

#11
dbud

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Iv been wondering y ppl dont use mirrors. never relized. I had planed on making the floor of my grow room outta a huge mirror i have glad i know this now.

#12
ganjaganja

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yeah itallburns, I also had a similar thought process when i started farming, and tried it in a few grows before realizng that I was drying out the leaves from the underside and in turn, getting hot spots on the top side of the leaves.

no need to light plants from the underside really. photosynthesis occurs just fine with top light

#13
dbud

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what about that chrome spraypaint you can buy. id say thats way better then just white paint. just a thought tho

#14
ganjaganja

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not sure what the reflectivity of the chrome spraypaint is, never checked it out


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