You can...however it becomes much less efficient because your ventilation system is sucking it out before the plants can absorb it. The best way to induce it into a traditional non-sealed room IMO, is to run your fan on a timer...3 or 4 hr intervals of on/off. While your ventilation system is off, you should induce CO2. Hope this helps ;-)
yes it doews and thanks i dont have muck for ventilation yet just a room with open window in my utiltiy room with some fans lol. i will improve more on this as i can afford it
well did a res change and still some of the old death spots on a couple leaves. but havnt noticed getting worse. whats strange is i have looked at every photo and plant abuse pic and havnt foun nothing resembeling kinda frusrtating.
yes it doews and thanks i dont have muck for ventilation yet just a room with open window in my utiltiy room with some fans lol. i will improve more on this as i can afford it
Did you say your runnin' a Hps thouie w/ no ventillation...yikes, I hope you live where it's cool temps outdoors....But if your runnin Co2, jus' seal the room and run a inline fan w/ a scrubber inside the room, you can let the temps get in the 90's(though not prefered) w/ good results....
Maybe the discoloration your seeing is due to runnin' C02 in the res, as I've only heard of throwin' O2 in there, How do your roots look, mayne...
they got a little stretchy on you. That sucks i know how that is when they do that. My last couple of grows i vegged to long and i had alot of stretch. This time i think i only vegged for like 2 weeks.
yea i dont mind a little stretch and i dont like messing to much with in flower. i wanna use my max time for veg as i can for bigger yeilds and. since i have 2 rooms andhave 50-60 days for flowering why not use that for veg!