Indoor Ventilation question for my new grow tent

[zaQ]

I just got myself a DR120 (120x120x180) tent. I had before a smaller tent and was thinking about using the same extractor fan with my friends extractor fan that hes not using to save up some $$$.

I have the two fans after each other behind the carbonfilter and i can notice a big diffrent from running one or the two togehter. the first one is at 220m3/h and the second at 175m3/h. So i guess they help eachade out and makes the airflow better, but i dont know if its that simple to just add 220+175 = 395m3/h? I guess maybe im somewhere about 320m3/h.

I tested the setup last night with 2 x 400 HPS and it gave me temps at 33°C (91°F). Im thinking now about changing to one 600W HPS instead of two 400 w.

I guess the two 400w HPS gives out way more heat then a 600w.

You think that would help my heating problem? Im aiming at 30°C / 86°F.

 

[zaQ]

Use the smaller fan as an intake and the bigger one for exhaust.

well, i had tried but it looks like my tent dosnt get under pressure. When im running my tent now the sides sucks in so it looks funny. Also the winter is soon coming and i wont be growing for 4 weeks. I think i can get some air from outside to cool my kitchen down, yeah i grow in my kitchen I throw away the dining table.

Ah well, 600 HPS is just 40€

 

[savoy]

Hey ZaQ,

I picked up an 80 cfm bathroom fan for $80, after my 4" duct booster was keeping my cab at 90-100˚f. Now its a steady 81˚. I'm using 230w cfls. Its fairly quiet at 2.5 sones, I guess if you're growing in the kitchen you're not too worried about stealth.

 

[zaQ]

Hey ZaQ,

I picked up an 80 cfm bathroom fan for $80, after my 4" duct booster was keeping my cab at 90-100˚f. Now its a steady 81˚. I'm using 230w cfls. Its fairly quiet at 2.5 sones, I guess if you're growing in the kitchen you're not too worried about stealth.

Well, im having a intake for air in my locker where my food is.. i kind of broke that last night so i now have cold air in my kitchen leaking in, hehe. But i will put a pipe in there and blow some cold air into my tent with a 100m2/h fan.

Well, my lady is visiting her parents in another country and she dont know about me building grow room in the kitchen, hehe. I will go in 2 weeks and see her so i guess i need to tell her what i did

I guess its pretty stealth for being me, i have put a curtain infront of the window.