looking for opinions on new set up

[Lurker90]

alright im getting ready to set up a 6k sealed co2 room with venting for the lights being blown from outside by a 8in max fan and pushed across the lights and back outside. now im wondering if 1 ill be running into any condensation problems from the outside air on the lights or the inside air being blown out and 2 if that should adequitely cool my room with co2

 

[JohnGault]

I think you are describing air cooled lights. If so I suggest pulling the air through instead of pushing.

Condensation will depend on the temp difference between outside air, and inside air, but I imagine with the heat from the lights it will not be an issue.

JG

 

[fireman]

Ehh honestly i believe you might run into some heating issues unless you live in some cooler climates. Definitely pull the air instead of pushing it. Maybe a 10" fan for all 6k. I would an 8" for each set of 3000, that is if you plan on setting up two rows of lights. If not maybe look into the icebox`s althought i haven`t got mine running yet so dont want suggest it quite yet, but ac`s are a bitch and break and arent efficient.
I run an 8" for 4000 2 rows of 2000. Bout to set up and 8" on each set and ice box for each light. Got a $50 1hp chillking chiller so if it works or not im gonna be switching to this system.

 

[Lurker90]

ok to be clear ill have a vent whole on each side of the room that directly sucks and blows outside. you guys think i should have the fan pulling the hot air from the lights/ cold air from the other end(hole) and pushing right out behind it(out the other hole)? it seems like there would be a higher chance of noise and condensation coming out on the exit end. i live in a fairly temperate climate; usually around 35-50 in the winter and 75-85 (occassionaly up to 90) in the summer.

 

[JohnGault]

It seems like you are now talking about room ventilation.

Air cooled lights are in sealed units with ducting on either end. When I air cooled my lights I used clear glass tubes called bake-a-rounds. They were designed to bake bread, but their 4" diameter made them perfect for cooling 400, or 600 watt bulbs. Used to buy them on Ebay for $10. Probably still can.

Either way. Lights, or room I recommend sucking, not blowing.

If we're talking about the room I also suggest a carbon filter in front of the sucking fan.

If lights, then if your home has A/C in the summertime I advise you to have your intake inside the house.

Your climate sounds fairly close to mine. We don't normally get quite that cold, and we get a fair bit hotter. Condensation anywhere in the system has never been an issue.
I even run a 9,000 BTU air conditioner that vents the humid air into the same area as the ventilation fan, and the ballast cooling fans.

JG

 

[Lurker90]

im talking just about the lights. they'll be sealed and have the vents ducted to it. the room will be sea.ed with co2 and a carbon scrubber recirculating in the corner for smell. should i be expecting heat problems? i just checked and the average temp in the summer is 65, rarely up to 70, would that be cold enough to cool the lights?

 

[JohnGault]

OK. So the lights.

You want to suck air through them with your intake in a nice cool spot outside the grow room. How big a fan you need depends on how many lights, how much ducting distance, and how many bends in the run.

I have not heard of a totally sealed room, and never used co2. I've seen sealed rooms mentioned here recently, but don't know the details. My two cents though is that you'll need to cool the room somehow. Even if you get the cooling on the light(s) right you're still going to have radiant heat to deal with.

What I've seen a lot of co2 users do is run the co2 for a while with the exhaust fan off then turn off the co2, turn on the fan, and replace the air in the room.

Of course you can run a hotter room with co2, and that may be enough for you.

JG

 

[Lurker90]

i was planning on have an 8 inch max fan on about 30-40 feet of straight ducting