Lens for 1,000 Watt system.

[GorillaGreenz]

Now I'm a camera nut, I work with lenses and stuff alot.
This is from an article I read on lens for air cooled 1,000 watt systems.


"USE the Right Kind of Heat for New EXPLOSIVE GROWTH

Plants like it hot! Heat energy is actually beneficial. It’s used with light to create sugar. It’s the other half of the photosynthesis reaction. That’s why when we grow corn, we pay close attention to plant degree days. On hot nights, you can almost hear the corn grow!

The problem is that radiant heat from a Metal Halide or HPS is a concentrated form of energy. It can burn plants that are too close to the bulb. The plant cells right on surface of the leaf are most vulnerable. They simply cannot conduct heat away fast enough to stay alive.

Our lens captures and absorbs this damaging radiant heat and prevents it from being re-emitted. The lens air cools itself. It converts damaging radiant heat into gentle warm air.




GROW PLANTS LIKE YOU NEVER COULD BEFORE! Concentrate the light without concentrating the heat! Now you can lay your grow light right on top of the plants for optimum effect! The closer you can keep your grow light to the plants, the higher the light levels you’ll get. Remember, More Light = More Growth.

You see, direct illumination nearly follows an inverse square law. So direct light levels go up by a factor of 4 if you cut the distance to the plants by one half! Also by keeping your light low and close, you are less likely to wastefully shine light on walk ways, walls, or other areas where you are not growing.

Specifications

-Size: 20” x 38” (Other sizes available)

-Tempered Glass with Low Thermal Emissivity

-Corrosion Resistant Hangers-

Plated Suspending Chain

-Does not include Reflector

Make your Electric Bill Lower

Fans cost money to run. Little tiny duct fans are especially expensive to run! You see, the smaller the diameter of a fan, the faster the blades must turn, and the more wasteful turbulent friction is caused. If you do have problem with over heating, you are far better off using a big box fan. They are cheap to buy at any home improvement store or Walmart, and move lots of air at a very low cost.

SAVE $$$$ Up Front

It fits your existing reflector. Forget expensive, inefficient inline fans and cumbersome ducts.

DON’T PAY THRU THE NOSE!

This lens is really a bargain. Normally these lens are expensive to produce because they utilize a baked on coating.. But we made a deal with a local glass plant so you can have it for less! Moreover, you’d be hard pressed to even find a manufacturer able to hard coat a lens that’s the size we are offering you.

"
http://cgi.ebay.com/AIR-COOLED-Glas...8514474QQihZ016QQcategoryZ42225QQcmdZViewItem

Tell me what you guys think of this. It sounds like it could be really nice, but it could be complete bullshit at the same time.

 

[Guest]

Ummm, isnt this just tempered glass? If so, you can pick that up at any shop.

As far as the screen part of it, not sure I'm really following....

Heat is radiated from the bulb and exhausting hoses. Heat then rises up and is mixed with the air being moved by the circulating fan. This causes an increase in grow room temps, transpiration and risk to plants. The 'burning' heat is when the plant is very very close to the bulb, like putting your hand on a burner.

Adding this screen will not reduce the heat, it will only reduce the direct heat radiated from the bulb... if you use tempered glass on your hood, or a home-made cool-tube, that will do the same thing.....

I'd say pass - it's a very basic grow addon that this ebay'er is making look shockingly necessary - reminds me of SuperThrive advertising...

 

[SweetIndica2]

Yea, sounds like pure marketing hype to me. I bet all it is, is tempered glass. Not to mention temperature barely has anything to do with photosynthesis. This guy can't even get his facts straight. Look up on wikipedia about photosynthesis, they have a section explaining that in tests heat did not affect photosynthesis. While a steady temperature is good, the actual temperature itself; weather it be 100 degrees or 60, will not effect a plants photosynthesis.

Besides, i highly doubt that lens will cool itself. Maybe a few degrees or so..but probably no more than that. I use a regular tempered lens with an air cooling system on my 1000w, and with the lens on and my fan off the lens gets hot enough to burn my skin very easily. How could a piece of glass cool itself from such intense heat?

 

[GorillaGreenz]

Yeah that's what I was thinking

 

[Haps]

I think there is some truth in there, in that if you can run a K close without burning, in the right set up, it could really crank growth a notch, if everything else supported that growth. But, as a salesman, I can tell ya that pitch is at least half BS, I can smell it from here. Hard to shit a shitter.

I am running a small vert bloom right now, 8 ladies dancing around a small blue star. I make an air column with a high powered fan below the light, and the heat is removed pretty well. The girls will grow right into the light, but I am suprised at how close some can come without being burned. So, I can see there is validity in the concept above, but reckon any tempered glass rig could do the trick. I would NOT run a K with glass in a reflector, the glass might stay cool, but the reflector would be turned into a small heating unit as much as light source. The only way this can work is to use the idea as a part of a solution that also removes the heat created at the same time, the heat has to go somewhere.
H

 

[Guest]

While a steady temperature is good, the actual temperature itself; weather it be 100 degrees or 60, will not effect a plants photosynthesis.

I have found bud temperature to be very important. Seems best temp for production/quality is very high 70's to about 80+ F. I used a very nice infrared thermometer to check the evenness of canopy temps in relation to production. It was very revealing.

 

[SweetIndica2]

Mountain- Read my post again. I never said anything about what the temps should be in the growroom, obviously around 70 to 80 degrees is good. But as far as the actual photosynthesis process, temperature does not matter. Temperature however, can have an effect on other processes of plant growth.

Haps- Well yea, there is some truth in there...but there are also alot of BS facts. It doesn't do anything different than any other tempered lens would. They make it sound like the lens cools itself, when infact you need some type of ventilation system to achieve that. Unless by cool they mean close to 200 degrees, because without any ventilation system my lens has gotten close to 200 Degrees F which is hardly "cool"

 

[pumpkin2006]

SweetIndica2, I believe he is referring to the temps effecting the potency of the marijuana. Sure, temps don't effect photosynthesis, but all bud grows, just some sucks... ever wonder why?

 

[SweetIndica2]

He may have been, but I never said it didn't effect the potency of marijuana, i said it does not effect photosynthesis. Maybe he should comprehend, and then post.

 

[Guest]

He may have been, but I never said it didn't effect the potency of marijuana, i said it does not effect photosynthesis. Maybe he should comprehend, and then post.

I don't need to reread anything. I heard what you said

all bud grows, just some sucks... ever wonder why?

Exactly.

Go ahead dude and grow within that range where photosynthesis is possible. I was offering some information based on my experience I thought would be helpful to someone.

Since I gotta wait 5 frikkin minutes between posts I got better things to do with my time and other places are more user friendly.

obviously around 70 to 80 degrees is good

That's still too wide a range.

 

[pumpkin2006]

He may have been, but I never said it didn't effect the potency of marijuana, i said it does not effect photosynthesis. Maybe he should comprehend, and then post.

Dude your an asshole, flat out. I don't like you

Go ahead dude and grow within that range where photosynthesis is possible. I was offering some information based on my experience I thought would be helpful to someone.

^^^^^ Exactly what he said. He was trying to be helpful, don't be such an arrogant prick and act like you know shit, when its obvious you don't. You can't even read what someone is saying.

BTW, whatever you type, I wont be reading, I'm through looking at this thread. Theres to many GOOD people on IC to even pay attention to the BAD ones.

 

[SweetIndica2]

Ok, that still doesn't change the fact that you called me on out on something i didn't say. I'm not here to start fights bro, so calm down. But, i never said anything about temps not being important in growing. I said they do not effect photosynthesis, and since that is what the company is claiming i figured i would point that out. No need to get angry. We are all here to have fun, and share our knowledge.

Obviously you are right about what the temps should be when growing, but that's a whole different subject. I'm not going to sit here and argue with you, it's childish. I'm done with this thread.

And pumpkin, go ahead and judge me on one post. I never did anything wrong, i was trying to point out that a company is false advertising, take it however you'd like. You'd been on here only a few months, so don't try and act high and mighty, because frankly i could care less what you think.