need help with exhaust::::too hot I ve tried everything

so I have this tent of which I made this crappy scheme,Dimensions are in cm; 150w hps in a cooltube,It gets too hot so I ve cut holes on the two lateral sides at one end i put an intractor suckin air from the room through a duct through cooltube and gets exhausted on the opposite side;At the ceiling exhaust hole I was thinkin of installing a T Joint plastic duct ,with 2 axial fans °144cfm° ,blowing air out as in the drawing;

Before You ask: I am exhausting in the same room where the tent is...no way to drill the walls or through window;;;I ve chosen the axial fans-they are not PC coolers! but much more powerful---because they make less less noise than an extractor and I can vary their speed as I want.......at the beginning I had only one fan at upper exhaust but it was not enough so I,m thinkin of adding another and install the T-shaped plastic duct........will this help cooling ,is it worth it ?or are my plants doomed to grow in heat??? +rep

p.s. THe drawing was made in a hurry ;hope u understand something of it!

Ive heard of people freezing 2 liters full of water an droping em in the box every day.

Another method is to make a refridge unit for it by using ice water in a coleman beer cooler. Then you pump (submersible garden pond pump) it to a copper coil infront your fan an back to the cooler.

good luck grower

You will need to vent hot air out the room somehow open the doors and windows and see if that helps, if that not an option then ur pretty much screwed although ideally you want to vent that air directly out the room somehow. what are you doing about odour control ?

What are the room temps and what are the temps in the tent with the light on? What provisions have you made to get room air into the tent? Looks like the box is 16x16 inch by 4 feet.

SensiStan said:

You will need to vent hot air out the room somehow open the doors and windows and see if that helps, if that not an option then ur pretty much screwed although ideally you want to vent that air directly out the room somehow. what are you doing about odour control ?

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that's right. depending how many plants ur growing and what medium ur using, i would think to vent back into the same room you would need an air scrubber, an a/c unit, and a dehumidifier. why can't it go outside? renting and don't want to cut a hole? i would just do it, if you can grow bud and understand peoples mad scientist shit on here, you can definitely puddy and spackle dry wall.

SensiStan said:

You will need to vent hot air out the room somehow open the doors and windows and see if that helps, if that not an option then ur pretty much screwed although ideally you want to vent that air directly out the room somehow. what are you doing about odour control ?

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I have no kind of filter....as for window......lights are on at night and it s a "mansarde" apt.,and I sleep in the same room with tent,so can't open no window cause of air drafts....I only open it during the day ....i'm not at home anyway.I find myself conditioned by a lot of factors for keeping a growtent ,so ,I cannot follow the regular ,simple ,direct and most efficient ways ,in my case it's kinda going round a bit ,improvising all the time,and asking weird questions.Smell is not the biggest problem ,if ever a problem ,.....I have to deal with heat and noise rather than odour.

ow.douglas said:

What are the room temps and what are the temps in the tent with the light on? What provisions have you made to get room air into the tent? Looks like the box is 16x16 inch by 4 feet.

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The tent has 3 small passive intakes( it is a tent used normally for mother plants/clones) but it s the smallest one and the only one that fits in that corner of the bedroom ,and I can hide it behind curtains).at one of the intakes I have a PC fan bringin air in the tent.(should I add more?)
The temps inside tent can get as far as 33-34 degrees Celsius,despite the cooltube which is vented from side to side(glass gets hot and spreads heat quickly in such a small space and I can't keep fans at max power because of noise---can't sleep at night and also ,could be heard from the apt below where the bldng owner lives--- ; and I use an axial fan of 144 cubic meters per hour
that looks like a PC cooler of 4 inch,except it is made of metal and much more powerful, SUNON brand ,dunno if that exists in your areas.

SCARHOLE said:

Ive heard of people freezing 2 liters full of water an droping em in the box every day.

Another method is to make a refridge unit for it by using ice water in a coleman beer cooler. Then you pump (submersible garden pond pump) it to a copper coil infront your fan an back to the cooler.

good luck grower

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won't some water evaporate and interact with electricity?

34C=93F, too hot. It sounds like stealth is your primary concern with the landlord in the building. If you want to stick with the 150W you are going to have to move more air and it sounds like that is a problem. I would consider T5's they push the temps in my 2x2x4 box about 7-8 F with one small fan. The box will have to be a little bigger for T5, maybe CFL's. Good luck!

I'm back, even one plant in bloom is going to stink. With the landlord there you will need a plan, check out the ona gel and some of the other answers that are out there.

ow.douglas said:

34C=93F, too hot. It sounds like stealth is your primary concern with the landlord in the building. If you want to stick with the 150W you are going to have to move more air and it sounds like that is a problem. I would consider T5's they push the temps in my 2x2x4 box about 7-8 F with one small fan. The box will have to be a little bigger for T5, maybe CFL's. Good luck!

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I added a dimmer to the ventilators and i can control better now the SOUND vs AIR FLOW so temps are 28 degrees C at 3-4 inches below cooltube and 26 to 27 at 8-9 inches from cooltube.I also aded a pc cooler to blow the air jfrom just underneath the cooltube towards the upper corner where tent's exhaust is .It may now win the war ,but I sure as hell won a battle......................remains to see when I will start growing( 1 plant )not more.

landlord downstairs.... it it that serious to grow?

supdro said:

landlord downstairs.... it it that serious to grow?

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It is not that I fear he'll go to the police or anything ,I'm sure he also puffs from time to time.....but it's rather he doesn't know ,as I always been in good relations with him......so it's rather common sense more than paranoia ,in my case......