Is intake and exhaust required with envirolites(200w)?

High,

I've got a project with 7 lowryder no.2's in a 60cmx120cm, 200cm tall growroom, I'll be using one 200w envirolite(white spectrum) until flowering starts, then add another one with red spectrum, use these until harvest.
My question is, as these envirolites shouldn't produce much heat, will I be needing intake and exhaust? There would be one or two fans blowing towards the lamps and Co2 will be given with these: No Mercy Supply .

I'll be turning the lights off for one hour each day so they shouldn't produce excess heat.

Thanks:jointsmile:

In addition: The box on the co2 tabs says the co2 bonds with the water 4-6 hours, so would this be ok if I would add it every watering? Or does the plant need continuous supply of co2?

Also, maybe opening of the closet for minute a day would be required?
Or, would only intake with a fan do the job?

Any input will be much appreciated:smokin:

You'd still probably want to consider adding an exhaust fan to the setup, if for nothing else, than to control the smell brought on by flowering. Intake could be as simple as opening a window in the same room, or having a strong inline fan blowing fresh air from an open window into the area that the growspace is located. Good circulation of air keeps plants healthier. Pockets of stale, warm air can form in unventilated grow rooms, and are no good for the plants. On another note, you're not going to get as much fresh air into the growspace as you would if you were using a strong intake fan to bring in the fresh air directly.

As for carbon dioxide supplementation, I prefer using a small amount every day using a tank & regulator. I've yet to do any experiments where a constant supply of enriched CO2 is supplemented...namely because of the inherent cost of running such a setup. If you plan on running a system that supplements CO2, you really should have the entire space sealed...so as to prevent leakage of the precious gas into other rooms of your house, attic, etc. As I said, it isn't cheap, so you'll be careful not to waste it. Also, you don't want your fans to blow directly at the plants at the same time the regulator releases the gas, or you'll just end up dispersing it everywhere BUT onto the plant(s).

But, by making sure the growroom (no matter how small) has adequate ventilation, in essence you'll be supplying a constant - albeit, minimal - supply of CO2. This is generally enough for small to modest grows.

Hope that helps.

Thanks.

The closet with the grow is sealed, so no air or smell would be going outside. I already have a hole on the wall in the top of the closet, would it be possible to add the intake there and put one fan to blow towards the lamps? That way I wouldn't have to order negative ion generator from UK for the smell... Or is the intake required to be on the bottom of the wall?

Intake and outlet can be at the same level, however the best is to have your intake low and your outlet high
You shouldn't need it for the heat since envirolites give off very little heat, but you do need to circulate air around the plants.

Quote:

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Originally Posted by psychocat

Intake and outlet can be at the same level, however the best is to have your intake low and your outlet high
You shouldn't need it for the heat since envirolites give off very little heat, but you do need to circulate air around the plants.

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Thanks.

Will it be possible to put the intake to the top and one fan blowing around the plants inside the closet? This way I wouldn't be needing exhaust so the smell couldn't get outside the closet. With exhaust I'll be needing negative ion purifier that would cost me 50-80 euros...

Use a carbon filter on your outlet and the activated charcoal should take care of any smell. Neg ion purifiers are not needed and they are too damn expensive for a private grow. You have to let the air circulate and the only way is if the air you're pumping in has a way to escape.

Quote:

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Originally Posted by psychocat

Use a carbon filter on your outlet and the activated charcoal should take care of any smell. Neg ion purifiers are not needed and they are too damn expensive for a private grow. You have to let the air circulate and the only way is if the air you're pumping in has a way to escape.

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Thanks, gonna make intake at the bottom, exhaust at the top then... Will have to look on the carbon filter, maybe I'll be able to get it together myself.

You'll definitely still want to think about adding at least a small carbon filter. Even though you won't be venting directly outside, it can still smell your entire house up really quick...especially during the last few weeks of flowering. My first grow didn't use anything in the way of odor reduction, and I seriously couldn't have invited anyone over to my house who wouldn't have been perfectly fine with the fact that there was fresh marijuana growing somewhere in the vicinity of my living room. (Actually, fifteen feet straight down in a crawl space.)

I've since switched grow locations, added a much needed ventilation system, and now don't have to worry about unexpected guests coming over. This helps me a great deal, as I have a family of my own, and relatives are prone to dropping by at a moments notice, generally without calling...

Good luck with your grow!:rastasmoke:

Thanks.

I found air purifier like this:
Philips Clean air system HR 4320B (as new) - eBay, Air Conditioners, Cooling, Major Appliances, Home. (end time 09-Oct-07 16:35:36 AEST)

You think it will take care of the smell? That combined with intake and exhaust...

Gonna make one of these:
Easy to Build DIY Carbon Filter - Marijuana Growing

Thanks mates for your input.