Holy heat problem!

[Guest]

Not to be redundant with another heat question, but I got a problem. The problem is that I have high temps during lights on cycle in my flowering chamber. I run a 1000 K HPS .I know all about needing to ventilate the stale hot air out while drawing fresh air in but here in lies the problem. My grow is located in a basement with glass block windows that are probably too small for an air conditioner. I'm renting the house right now so I can't really make any serious alterations( like blowing holes in walls ,running duct work ect). I also don't want to run an air conditioner because of ventilation problems. I do have two fans set up in my room ,both are attached to the walls of my flowering chamber, one pulls air out the other brings air in even with these running it still gets to like mid 90's in there. The only idea I could come up with is maybe buying a squirll cage fan and maybe blowing the hot air into the other part of the basement( I don't want to vent outside,because I have neghbors very close) so I don't really know what to do , but my crops always turn out shitty in the summer because of the heat.
Any advise twords my situation would really help. thanks

 

[Wacky Tobacky]

portable ac perhaps?

 

[gsxxer]

If you cant run duct work, cant get an a/c the only choic you have is to use a smaller light in the summer right?? 95 degrees?! i can feel there pain!!

why have a shitty harvest from heat stress when you could have just as good as one with a smaller light (saying you could keep the heat down with that one)

lol yeah i would try a squirrel fan, inline fan...anything besides u
sing 2 regualr fans as ventilation for 1000w

No matter how much ventilation you have, you have to make sure the ambient temps are in check...so if your basment is hot even without the light on in the summer, then its going to be extra hot with the 1000..so im guessing you dont have the grow enclosed?

your only choices are cool the basement somehow, vent the heat outside, dont grow in summer or get a smaller light

 

[packn2puff]

I'll second that..the portable AC usually has a 4" dryer like duct attached..you can make a board that fits in the window..make a hole in the board and install a dryer flange..then just paint the board black and maybe cover with black screen..and install in window..a lot of people don't know but Home Depot will make 2 straight cuts in plywood you buy, for free..that will get you just about any square or rectangle..
The exhaust from the port AC must go outside or somewhere you don't mind dumping heat into..

Also CO2 supplimenting will allow you higher temps...

This is 1000W HPS in what size enclosure..more things can be done..but kinda hard to deliver solutions without more info..
If you are using those fans in a push-pull type set-up..1 in fan, 1 out fan...make it 2 fans exhausting with passive intakes...
The reason: with push-pull depends on fan RPM to be correct so the box doesn't pressurize..if anything a passive intake system might cause a vacuum in the box..decrease in pressure..
An increase in pressure = increase in temperature and vice-versa..part of Bernoulli's Principle..jet aircraft cooling systems use this pricipal and use a turbo-charger and heat exchangers..they pressurize the air to get it really hot, cool off that super hot air with a heat exchanger in the air-stream..then depressurize it..the end result is air near freezing..
Definitely vent into the other part if you can..being underground, basements usually stay fairly cool..at least mine does..
Besides the heat..the plants need fresh air too..
Hope this helps some..if you can..a pic is really helpful..

 

[Blackmelo]

Mt Tai, airconditioners use fuckloads of electricity and should be avoided as much as possible.

You say an airconditioner won't fit, well you shouldnt be using one anyway. What about an extractor fan. They use 10-100 times less power than an ac does and do the job just as well.

You should get yourself one that can extract at least the volume of your room per minute, up to 3 times if you have serious heat issues.

 

[Guest]

Packn2puff, That is very interesting about the pressure being in direct corallation with the tempatures. I will switch both fans to exhaust w/ passive intakes. I will have to look into portable Ac units and extractor fans. In retrospect I wish I had just purchased a air cooled light and been done with it ,but hindsight's always 20/20.
thanks for all the help.

Ijust looked into exhaust fans and will be purchasing one this week. once again thanks for all the advise , this has been a problem for awhile , and it's about to finally get solved.

 

[Tunefull]

U could maybe try having your lights on at coolers times of the day(thru the evening/night)

I have a veggin area out in my shed,and my llights go off from about 10 am to 4 pm...It is still warm in there at say 5pm(but not as warm as it would of been thru the afternoon)

 

[powdergreen]

if you use high volume fans for exhaust into an adjacent room, you will be intake that hot humid shitty air. you have to get that air out of the house, not to mention the mold that can occur from venting inside could be harmful to your health. try venting out your chimney or your roof.

 

[Guest]

Yeah my temps are around 85 -90, running a 1000 watt in me attic, my main issues are lack of money. but I 've stuck a hole in me chimney and vent out hot air, the attic is not an enclosed one fortunatly so draws fresh air in - still it's a little hot. Next summer grow I'm gonna try Mandala seeds as these are very resilliant to heat - infact they grow their strains in temps like up to 120 degree's with no stress problems and still get good yields - a good choice for summer grows in conditions that would not normally produce such good result's.Thats just my 2 pence worth....oh mandala seeds are on seed boutique. To get an idea of their strains you can check it out at www.mandalaseeds.com Hope yer garden grows well....Stash

 

[Guest]

I swithched the fan today , lights just came on a bit ago , so I'll check it w/ the fans running and see what happens.
Yeah Stashman, lack o' money seems to be a problem in my house too.
I always get better crops in the winter time. I actually look forward to winter now!
I 'm looking into a exhaust fan right now but still a couple of issues to work out like where I'm going to ventilate the stale air.I looked into portable air conditioners....too expensive. Anyway I have to get a handle on it this year.thanks for the advise