Teach Me?

Sheepdog420 said:

If you're talking about the grow bags that you'd use instead of pots, I've seen them cheap at my local hydro shop. I'd bet eBay has them.

I also happen to be an engineer who specializes in optical systems...don't use aluminum foil.

Just because something appears to be "shiny" doesn't mean it's highly reflective. A piece of white paper is very highly reflective, but disperses the light evenly across a wide angle.
Light may shine in your eyes off a chrome truck bumper, but that doesn't mean it's a good reflector.

Sure, we use aluminum reflectors all the time...with highly polished surfaces, specially formulated coatings and highly engineered optics...

Just buy some matte white paint...

Sheepdog

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lol nice to see someone with a brain helping out this guy.

OOPS! sorry i didnt know i must make my own 'thread'.
ill repost it on my own sorry people!!!

yea i took the foil out. I had to move the box out of my house and into my shed. its like 40 degrees inside the shed but 70 in the box when the lights are on for 18. i guess it goes to 40 when the lights turn off for 6. Do you think thats going to kill the plants?

ronronvc07 said:

yea i took the foil out. I had to move the box out of my house and into my shed. its like 40 degrees inside the shed but 70 in the box when the lights are on for 18. i guess it goes to 40 when the lights turn off for 6. Do you think thats going to kill the plants?

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they will slow down in growth ALOT. you may see some redding or purple in the stems. mine have drooped down including the stems. im positive mine are dying. try to get a small economic friendly space heater in there. make sure its oil then it will use even less electricity!

where do u find those at?

Yeh it would b nice to know where to get a small heater that is ideal for putting in a grow box, I may need to get one as well, any places to get it and what types are available, please help.

i went to walmart as saw they had a small oil heater. it said economic on the box. im going to go buy one soon so i will tell you the brand name. the reason they are better is it has oil in it that heats up and then the heater turns off and relies on the hot oil to continue heating. once the oils temperature has dropped the heater turns back on.

this one was about $40 CDN.

yea do that. i appreciate it

ok so i bought one of the heaters from walmart.

It an Airworks "mini oil filled heater"

700 watts instead of 1500 like most other heaters. its really small and im hoping it will heat my shed nicely.

Sheepdog420 said:

If you're talking about the grow bags that you'd use instead of pots, I've seen them cheap at my local hydro shop. I'd bet eBay has them.

I also happen to be an engineer who specializes in optical systems...don't use aluminum foil.

Just because something appears to be "shiny" doesn't mean it's highly reflective. A piece of white paper is very highly reflective, but disperses the light evenly across a wide angle.
Light may shine in your eyes off a chrome truck bumper, but that doesn't mean it's a good reflector.

Sure, we use aluminum reflectors all the time...with highly polished surfaces, specially formulated coatings and highly engineered optics...

Just buy some matte white paint...

Sheepdog

Click to expand...

Paint absorbs light and internally, randomly, reflects it, some makes it back out. Each layer absorbs more light. This same property of paint creates the even field of diffusion. My plants don't really dig diffused light(puns are hilarious). Do yours? Specular reflection(shiny) is the most important factor desired.

Chrome IS a good reflector. It's a smooth mirror finish, like all of the best reflectors.

Specially formulated? No offense, but you sound full of sheee-it. None of what you said makes any sense to me.

In reference to Sheepdog420's post

Extortion22 said:

lol nice to see someone with a brain helping out this guy.

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None of what this guy says makes any sense to me either -always.

TeaTreeOil said:

Paint absorbs light and internally, randomly, reflects it, some makes it back out. Each layer absorbs more light. This same property of paint creates the even field of diffusion. My plants don't really dig diffused light(puns are hilarious). Do yours? Specular reflection(shiny) is the most important factor desired.

Chrome IS a good reflector. It's a smooth mirror finish, like all of the best reflectors.

Specially formulated? No offense, but you sound full of sheee-it. None of what you said makes any sense to me.

In reference to Sheepdog420's post




None of what this guy says makes any sense to me either -always.

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seriously man, give up. your wrong.

Who should I believe? Lets see... researchers and developers of reflectors: http://www.molalla.net/~leeper/refcoat.pdf

Or you, or Sheepdog420? Neither of you are convincing in the least.

Let me break that down for you guys: Incident angle of bare aluminum is, perfect for a reflector @ 0 to 45°. While paint has reflectance, it's not classically said to have reflectivity. The best reflectors do both(like dimpled metal). A smooth mirror-finish metal is reflective.

Oxidation mainly hurts UV light, not unused, but not exceedingly useful. It may sound funny, but I've polished aluminum foil plenty of times with silver polish to get rid of oxidation and it produced a near-mirror finish.

'Coated' metal(not with paint) has the most superior durability and superior reflectivity. It's far superior to generic matte/flat white paint. You're a fool to think otherwise.

I've used it. It works better than white paint -any paint! If done right.

ive used mylar and am currently using white plastic from my local grow shop, its the light proof kind with the black layer inside. white is much brighter: no really it is.............stop argueing, use what ever you want. who gives a shit!!! ever look at sw7005, in direct sunlight? it will make your eyes tear up.....tin foil or mylar dosent do this, simply because its reflecting all the colors of yout garden back to your garden. oh sw7005 is a paint color from sherwin williams. wow crazy how google has turned soo many people into self-proclaimed no-it-alls.

I never said I was a know it all. This shit is common sense to me, as I have a highly scientific background.

I'm pretty sure there's no doubt about it when you look at the evidence.

Now then, if you prefer to regurgitate the same baseless nonsense as other blind-believers, that's your choice.... Welcome to RIU, nevertheless. Hope you learn while you're here -I have.

You asked to be taught, and I'm dealing with the ignorance and misconceptions as best I can. With more reason and rationality.

http://nuweb2.neu.edu/math/cp/blog/?action=get_events_for_date&date=2007-02-11

Maybe if you e-mail the professor he'll explain it to you personally.

who cares?

Your plants.... Maybe you.

Maybe not.

yea i do but this thread is turning into another topic. seriously...ill just start a new one

OK well I know I'm coming into this a bit late.. and I have read a few of the pages on your post... and YES get rid of the tinfoil... it's one of the worst things to use as a reflective surface.... it creates hotspots in your cabinet as well as it does not direct light effectively....

"Who should I believe? Lets see... researchers and developers of reflectors: http://www.molalla.net/~leeper/refcoat.pdf"
from "TeaTreeoil" honestly if your going to go and pay an assload of money for some companies "reflective surface recoating" material or paint go ahead.. but flat white paint does JUST FINE! is heaps cheaper.... and when your posting links for people to go too there teatreeoil make sure it has something to do with what is in the tread and not some random jabber from a company that has a specialty in fabricating prodtucts to produce high reflective materials....


if you have any time inbetween posting crap and looking up useless information go take a look at the growfaq... these guys have been doing it for years... and would not post wrong info......

and from what I know.... Tinfoil is ment for cooking...


And Ron your plants look good... keep up the good work

The grow FAQ makes the claim that CFLs are superior to HIDs for growing plants.

This isn't an aluminum foil crusade.

Hot spots are myths created by dumb asses, and regurgitated by the thought-less. You've never used it, never had them, stfu, come on. Get real.

It does direct light effectively. That's what it does best. That's the whole fucking point. Research this.

White paint = Lambertian reflectance(even field, random vectors).
Metal = specular reflectivity(direct field, direct vectors).

Specular reflectivity is what is desired for a reflector of light. Maybe you grow in your living room's nice diffused nice? I grow under intense direct light.

I don't want even light *ALL OVER* my grow room. I want *DIRECTED* light at optimal angles *TOWARDS* the plant.

Look at mylar or foil rooms. The *ALUMINUM* isn't shining at most angles...(it takes an angle equal/opposite to the light being struck from the source). This is good. This means the light is being DIRECTED towards the plant like a LASER BEAM with a properly shaped reflector. It is not being DIFFUSED. It is not being SPREAD around the room like a bong at a frat party(white paint).

Go back to school.