Glass for air cooled hood?

[Smoking Chef]

I would like to find out what type of Glass is to be used for a air cooled hood?
I use a 400wt system, and would like to protect the bulb from water when i
mist my plants with a sprayer.
I am guessing normal glass for a window will prolly not be good enough for the high temps.
Cheers,
Chef.:)

[sjacobs713]

hey man , i have been having major heat issues w/ my 1000w , w/ an air cooled, and i went to the hydro shop this weekend and they ended up convincing me to buy the glass ( tempered glass ), and DAMN does it make a difference.. i sealed it all around w/ duct tape so that it's pressurized, and it makes the world of a difference..

[Zandor]

NOT True.... window glass will work for even 1000 w bulbs. As long as you have air going them single strength glass is fine. It's better to get double strength glass only for the fact that it takes a beating better then single does by far. Many times with single strength glass when you are changing out a burned out bulb and the glass is still warm it will break while you slide it in or out. The double strength glass is much thicker and stronger and just as easy to find.

But to answer your original question yes even single strength glass will work and you know the down side of it as well.

[Zandor]

hey man , i have been having major heat issues w/ my 1000w , w/ an air cooled, and i went to the hydro shop this weekend and they ended up convincing me to buy the glass ( tempered glass ), and DAMN does it make a difference.. i sealed it all around w/ duct tape so that it's pressurized, and it makes the world of a difference..

I assume the term duct is the foil tape like the one that is used in heat ducts right and not the cloth type?

Cool dude I seal mine too to keep the hot air in so the blower can move it out easer. :thumbsup:

[sjacobs713]

yeah the tape that is made for heat ducts.. didnt know what it was called, and it resembled duct tape...

[GaGrown]

Is it silver? The foil kind?Suretape? there are other brands outhere! That glue on the back of duct tape,will melt away from the cloth and ignite!!1000 watts of HOTTER THAN HELL!

Ga Grown

[Smoking Chef]

Thanks for the info guys.
I will get temperd Glass for the hood now, and seal it with duct tape.
At the moment , I am growing in the atic and the temps get into the high 90s
cause in summer its like a sauna up there. What about air coolers ,do they work?
I have a 200mm intake & 200 mm out fan, and osculating fan and a dihumidifirer
all under a 400wt system. I do run the lights when the sun goes down, to try and keep the temps down.My last grow Oasis from Dutch passion(feminised) turned into hemafridites and i got a crap yeild, but loads of seeds. never again will i buy feminised seeds.I am now growing White Widow(boring) .
And 1 last thing,Training or pruning? witch is the best for indoor growing.
I find training a lot of work and you end up with lots of stems and buds everywhere. If i prune to have 4 main stems and leave it to grow then is this recomended?

Thanks for the help people,

Cheers,
Chef.

[Smoking Chef]

Just wondering, do you suck the air out or push the air in when you seal the hood?
I was going to suck the air out, is this right?
Tks,
Chef.

[sjacobs713]

yeah suck it out..

[Zandor]

If it's a sealed hood it's better to push the air through. Sucking the air can in most blowers cause a pressure problem and they may not get up to full speed and run as freely as they should and that will produce heat in the motor.

If it's the room then you suck the air out of the room.

[sjacobs713]

so you have your's sealed around where the glass is, and then you have another outlet for air to go out of, Zandor? i too have another outlet to let the air through, but I was told it was good to have it pressurized? so you have 2+ fans for your room, right? one for pusing air through hood, and then one to suck out hot air? prob another one to bring in air too?

[Opie Yutts]

A piece of plastic food wrap would be good enough if your ventilation system is good enough. I wouldn't recomend this though. The point is the glass should not get that hot if you do it right, so it won't matter what kind of glass you use. You could use plexiglass if your plants can touch the glass, and they should be able to or you've done something wrong.

[Jdog7000]

Zandor has a big blower blowing the air threw his lights.
And an exhaust fan hooked up to dampers to recycle the co2 back into the room.
Then it switches everyonce in a while to suck the air out.
Can't remember seeing an intake fan?

[Zandor]

Zandor has a big blower blowing the air threw his lights.
And an exhaust fan hooked up to dampers to recycle the co2 back into the room.
Then it switches everyonce in a while to suck the air out.
Can't remember seeing an intake fan?

There was no fresh air in I used CO² and A/C. The plant makes itâ??s own Oxygen as a by-product of the chlorophyll process. You have the blower that was the air in on the lights you are using. The exhaust side was pumped out the roof through a vent pipe. You have my blower box how is that working for you now dog?

There were one blower for the lights and one mounted in the ceiling to exchange and scrub the air. It ran all the time 24/7 and scrubbed the air and returned it to the room. When I needed to exhaust the CO² there were dampers on the roof that switched between air return and air out. The carbon scrubber was in the ceiling so odor was not a problem.

[sjacobs713]

damn, u must have had a serious grow going on...
i'm pulling my through, completely sealed off so it's presurrized, and no grow room air gets in, and then i have the dryer ducting that is connected to an a/c vent 30+ ft away dropping in cold air...
this weekend i am going to go and get a carbon scrubber w/ fan, and cut another hole in the ceiling and let that pull smelly/stale air out..
the way i got it now, has got my temps at whatever i have my house a/c set at.. :)
never thought about blowing it through....

????

[busteruk7]

NOT True.... window glass will work for even 1000 w bulbs. As long as you have air going them single strength glass is fine. It's better to get double strength glass only for the fact that it takes a beating better then single does by far. Many times with single strength glass when you are changing out a burned out bulb and the glass is still warm it will break while you slide it in or out. The double strength glass is much thicker and stronger and just as easy to find.

But to answer your original question yes even single strength glass will work and you know the down side of it as well.
makes sence really why settle for second best when ya can ave the best
cheers all :)

[moreover123]

I had a quick question.... I have a hood with glass. A 4" hole on each short end. I'm not planning to cool it. Is it ok to leave the glass in and not be cooled/exhausted? I have no idea what type of glass this is. Sorry for the neub question.

[sjacobs713]

yeah, but the only purpose i could see that doing is protecting the bulb.. but it shouldn't mess anything up, or take away from anything..

slim

[Jdog7000]

It does create too much heat.
And blocks too many lumans.
Take the glass off if you arent cooling it.

I'm in the proccess of moving Zandor.
So that blower is just chilling at the moment.
Not sure if I can use it were I am moving.
It might be too load.
We'll see.

I was going to hook thing up this way...
carbon scrubber, light, blower out into the attic.
My blower is a 465 cfm blower.
So I THINK this will be enough power.
I'll keep it as close to the exhaust as possible.
Hopefully I can just use the big one.
That way I could use both lights.
We'll see.
I just got the place!!!!Moving tomorrow!!!

[GaGrown]

Zandor,you do know alot about the HVAC! Yup! That's all true and been said more than once ! I'm sure!Anyway that was a good post for those who don't get the most out of their equipment,due to failure!Overheating! Can cause a fire! Push It! And,Push It Real Good!

Ga Grown!

If it's a sealed hood it's better to push the air through. Sucking the air can in most blowers cause a pressure problem and they may not get up to full speed and run as freely as they should and that will produce heat in the motor.

If it's the room then you suck the air out of the room.

[Smoking Chef]

Thanks for the info guys..... great help for me to get my temps right.
My Blueberrys are 2 days old now, and I only want the best for them.....lol.
Cheers,
Chef.

[sjacobs713]

i feel ya man on wanting to have everything as perfect for your ladies as you can make it!
good luck!

slim