Cannabis Grow Rooms

will a hepa filter get rid of the smell with a small garden of 2~4 plants

Q: Can I let my seedlings stay outside in sunlight during the day and take them in during the night under flourecsnt? Extra... I know that there is a transition period from transfering to both, but i dont know if u can use both. Thanks!~ Okay, i put my seeds in water for about a week, i gave up on them so i put them in dirt in buckets and left them in my room. Then abou 5 days later i check up on them (by accident) and 2 had sprouted! One was a little bit streched but the other still has the shell on the leaves (5 i used, 2 have sprouted so far). Anyways, i left them both outside, but considering were still in winter i brought them back inside and ran out and bou…

Need a bit of advice on exhaust fans. I want to start flowering in a coup weeks so i will be extending my GR to 8ft x 4ft and hanging up a second 600hps. The room is not sealed. ( 12 inch gap around top) For the time being i have a 250mm intake fan pulling fresh air from window and a crappy 250mm exhaust, works fine at the moment but i want to update the exhaust and this is what im looking at. 250mm hydro turbo 800 odd cubic meters hour (220lps) $115 200mm inline (apparently very quiet) 110 lps $180 (would run a second 150mm passive intake from window to shades). Im wondering if the inline fan and duct would pull the heat from the back of the shades better or if …

I cant get the humidity to rise highier than 30% its horrible dry!!! The temp is around 100 degrees. I put a jug of steamin hot water in and it only went up around 5% the temp stayed the same. Anyone have any ideas what i could do to lower the temp and rise the humidity without a humidifer? possibley more exhaust????

Have placed 4 4ft fluros underneath facing upwards , in an attempt to fill the bottom out a bit more , I have never tried this before , its only been a couple of weeks but the bottom is looking good with nice growth and no dying of in the middle , the top of the grow is very dense so there is very little light penetration , I dont know but so far this looks like it is worth doing , I dont think you need much light down below if you got plenty up top , even in full sun in the middle of a plant the light is only about fluro brightness , the fluros just seem to keep the bottom of the plant nice and healthy . Have any of you guys done this and if so how did work for you …

Hey all, thinking of giving this years crop a headstart inside but don't want to lash out on big fancy lights are fluro tubbes any good?

Ok I have been offered a pretty damn good price to get one of the fans pictured bellow http://www.hydrocentre.com.au/images/250_industrial_fan.JPG BUT I was told that you can go to far with the power of your exhaust fan . What I want to know is how much is too much ? is there a formula I can use to figure it out or is it trial and error ? the room I am getting the fan for is 4.3 m3 I will be using a carbon filter and will run eigther 2 or 3 600w lights so I need a GOOD fan for cooling otherwise it's gonna get too hot for the girls the fan pumps roughly 2000m3 per hour is that TOO much for my needs ? and also what happens when you go overboard …