we've had to turn two of the lamps off as the temp' of the room rose to a fairly dramatic 96f. Most of the plants have two sets of serrated leaves, and all 80 are living off one 400w metal halide. I'm hoping that as the plants grow we'll need the extra light.

Also, winter is on the way, and we're thinking of using a fan heater to keep the room heated during the darkness period

If you are growing 80 plants under 1 - 400watt HPS..

you are in for some serious over crowding..

can you post a picture?

iloveyou

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SeeMoreBuds
HOW TO GROW MARIJUANA - 15LBS IN 80 DAYS
www.SeeMoreBuds.com

You need some ventilation going. You need a way to exhaust all that heat out. Maybe use a wall a/c or something.

this is our first time and we've managed to get room temp down to an even 90f. We do have a large fan blowing directly between lights and plants. Why is temp of room such a consideration? My meaning being that it would be far hotter directly under the lights where the plants are anyway. Surely the fan will provide adequate ventilation despite the temp of the room?

Anyway, thanks for all the info'. I've got hold of some cheese and I'll be damned, it's actually getting me stoned. Rarity these days, hence my personal venture into cultivation. I've learned loads and I'm already looking forward to starting my 2nd crop without all the mistakes of the 1st.
thanks again...

Hi SKUNK...

Ideal photosynthesis occurs at 76-78 degrees.
Meaning, at 72-82 degrees, your plants will produce the most BUD!!!

At 90 degrees, you are asking for a lot of potential problems..

Increased bugs, mold, fungus, transpiration, watering, stretching etc...

It can be done.. but for indoor growing it is not ideal..

If for some reason you get SPIDERMITES, (which I really hope you don't).. there will flourish in 90 degree temeratures.. wreaking havoc on your entire garden

iloveyou

pictures?

cheers

__________________
SeeMoreBuds
HOW TO GROW MARIJUANA - 15LBS IN 80 DAYS
www.SeeMoreBuds.com

Ok

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lol. Cheese in my neighborhood means crack. Maybe its a new hybrid crack/thc thats going around on his block. lol.

Sorry to whore your thread. Im just bored.

Ahhh ok, i wasn't sure, because where I am from, Cheese is that stuff that they make from milk (cow, goat) . hehe

off to smoke some bud, and catch some family guy on the tube.

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It's big over here in U.K. Very similar to AK47. I remember talking to an American on fics about it and he hadn't heard of it either. If you can get some I'd rec' it. Expect to pay more than usual. I've heard it going for as much as a tenner a gramme. That's Sterling.

Gotta find a way to lower temp' of room. What about a couple more fans?
An exhaust system sounds expensive? Could I build my own? Well, obviously I could, what I mean is, could I do it easily?