Lumatek ats pro 310 watt running hot.

[BII]

Rather than buying a likely moderately expensive larger fan with built-in controller, using your current fan (with a thermostat switch/controller) and adding a cheap booster inline fan pushing air into the tent (or adding it to the exhaust) may accomplish the same goals, save you $, and be more adaptable.

If fan noise is not a concern, you can use a cheap fan(s). No need to buy an expensive one made the be quiet/stealthy for grow tents vs. one quiet enough made for residential use. For ex., as my exhaust fan I am currently using the cheap ($35 on Amazon) AC Infinity 6" fan (https://www.amazon.com/AC-Infinity-RAXIAL-Booster-Controller) with speed controller, not their upscale super-quiet Cloudnine Pro grow market fan costing about 3x more ($99 on Amazon). It does the same job and noise is minimal. And I see Vivosun has a similar inline 275 cfm fan a few dollars cheaper and as 240 cfm model for just $28.

 

[George P.]

Rather than buying a likely moderately expensive larger fan with built-in controller, using your current fan (with a thermostat switch/controller) and adding a cheap booster inline fan pushing air into the tent (or adding it to the exhaust) may accomplish the same goals, save you $, and be more adaptable.

If fan noise is not a concern, you can use a cheap fan(s). No need to buy an expensive one made the be quiet/stealthy for grow tents vs. one quiet enough made for residential use. For ex., as my exhaust fan I am currently using the cheap ($35 on Amazon) AC Infinity 6" fan (https://www.amazon.com/AC-Infinity-RAXIAL-Booster-Controller) with speed controller, not their upscale super-quiet Cloudnine Pro grow market fan costing about 3x more ($99 on Amazon). It does the same job and noise is minimal. And I see Vivosun has a similar inline 275 cfm fan a few dollars cheaper and as 240 cfm model for just $28.

My current exhaust fan is 148cfm which is very small for a 3.3x3.3, so i need a bigger one, although i haven't figure yet how many cfm i need because everybody says a different thing. I wish I could save on expenses because I'm unemployed but i can't.
Noise is a serious problem because tent is in the same room where i'm sleeping, luckily it's a living room and that dissipates the sound. I will search it a lot before i buy something i will read reviews, see videos etc.

 

[Lil Dab]

My current exhaust fan is 148cfm which is very small for a 3.3x3.3, so i need a bigger one, although i haven't figure yet how many cfm i need because everybody says a different thing. I wish I could save on expenses because I'm unemployed but i can't.
Noise is a serious problem because tent is in the same room where i'm sleeping, luckily it's a living room and that dissipates the sound. I will search it a lot before i buy something i will read reviews, see videos etc.

What size is it 4" or 6"? I run a 6" with carbon filter in my 3'x3' that seems to be more then what I need in that tent. Look into getting a AC infinity fan and controller that ramps the fan up and down as needed per conditions set temp and rh

 

[George P.]

What size is it 4" or 6"? I run a 6" with carbon filter in my 3'x3' that seems to be more then what I need in that tent. Look into getting a AC infinity fan and controller that ramps the fan up and down as needed per conditions set temp and rh

Thanks for the tip, it's 4" with a carbon filter and it is very loud. Well, AC infinity is a very good brand but it's in usa and the cost shipping would be unbearable. Here in greece we have very few options regarding grow equipment and all the fans are totally crap.

 

[George P.]

Hello guys, I found a solution: I use two fans (20W each) positioned above the light, directing airflow at an angle towards the driver. This setup reduces the temperature by 34f to 40f (1°C - 4°C), with an average decrease of 36.5f (2.5°C) and the driver is running super cool.
If i use only one fan the driver is very cool to the touch but it doesn't do anything to drop the temperature in the tent. I wonder, then, where all this heat is coming from?
I'm uncertain if I will need 2x30W for a 3.3x3.3 tent, as the distance from the fan to the driver increases from 0.65f for an 2.62x2.62 to 1.3f for a 3.3x3.3. While it's not ideal due to the high cost of electricity, what options do i have?
With a house temperature of 68f (20°C), the temperature inside the tent reaches 77-79f (25-26°C), which is ideal for both the plants and the longevity of the light.
Thank you all for your help.

 

[elcoloan]

I wish I could save on expenses because I'm unemployed but i can't

Have you tried dimming the light and getting it closer to plants ? it could help you lower temps and reduce light bill while you figure the other stuff out.

 

[George P.]

Have you tried dimming the light and getting it closer to plants ? it could help you lower temps and reduce light bill while you figure the other stuff out.

I can't get any closer, a lot of buds are at 0.8F from the light at 310W but until now they have not shown any signs of stress. At 75%, it reduces the temperature by 35.5°F when I wasn't using fans blowing at the driver.