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Thanks cannabineer! That was my doubt. Thanks again Someguy15. The blower is a 253 cfm one with a potentiometer, more than enough. Thanks again for the fast and helpful replys.:-)

Thanks Someguy15, but are you sure? Don't odors propagate at the molecular level? If so, some smell will leak through any opening, even though there is pressure towards the out take mounted filter.

Anyone has any info on odor dispersion? Specifically in a small grow tent with a fair amout of negative pressure. The air intake is passive, the out take is a inline blower with a carbon filter. "How much odor will propagate through the passive intake?" Is there a specific air pressure that will...

Again, i need them to be on from 8pm to 8am. I already have an extractor, andn will upgrade soon, but not soon enough. Thank you anyway. If anyone else could help me i'd apreciate. (i also have very high humidity during the night ~70-80%

I need them to get light from 8pm to 8 am. I'm switching to the hps, and i'm already having temperature issues with the mh :(

They're worse. I'll give them some N and hope for the best. :(

They're currently on a 17/7 light schedule. Should i let them 27h in the dark, and then switch to flowering, or 30h with light and then switch to flowering?

Will do. GL.

I flushed them yesterday. Hopefully they'll be alright now. Thank you all.

whenever you have news, please tell me and good luck to your friend too

Thanks mate! I'll do that. The tent is a dark street 40, this one http://www.france-hydroponique.com/darkroom-street-d549.html

can anyone help me?

The 2nd blueberry is 14 days old and cursed like the previous 2nd blueberry, the other ones (blueberry1 and buddahs' sister 1 and 2) are 21 days old. The soil is biobizz all-mix, i did not fertilize. The water's ph is 6ish. I've a 250W MH 35cm (13.7795 inches) away, 17/7. The temperature ranges...

I can't really afford a propper blower right now, it'll have to wait. [url=http://www.france-hydroponique.com/darkroom-street-d549.html]This is my tent.[\url] Anyway, the plant just died, already started germinating another seed. Thank you all for your help.

the light is now 20" away. Opened the tent, got a fan blowing in, the temps are down to 82.4, and the plant seems to stand on it's own :D Still, it's only 8:40AM here and the outside temperature is sure to go up :(

Even with the mh? :neutral: Another thing, in my county, the temperatures are never lower than 55ºF (day) during winter(right now (00:20h) it's 60.8ºF/16ºC outside), it's hard to manage the temperature :-( I'll try to get an ac, but don't know how soon can i get it :\

if i've done the math correctly, 84.5CFM = 144m³/h, right? the tent is only 0.192m³ i thought it would be enough

i've ordered a stronger one yesterday, hopefully it'll arrive tomorrow. The one i have now is 36.8CFM and the one to come 84.5CFM.

Don't think that's the case Bigol'Bong, the plant is about .8 inches tall (~2cm). It-s most likely the temperature, but she-s standing up now and i-ve just put diamon reflective sheeting all over the place haha. Thanks

will do, thank you