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You do want it slightly smaller, yes. Are you getting the 6" fan? If so a 4" hole won't be enough unless your box is leaky. The area of a circle with diameter 4" is about 12.5sq in, 6" diameter is about 28sq in. Two would be ok, or one hole about 5 1/2"

Fair enough, although if I was feeling picky I'd point out that it's not a weed, it's a herb :bigjoint:. Of course it would survive without human intervention, you're right, but it would not be nearly as widespread if it didn't happen to contain the psychoactive compounds we love so much.

Cannabis has formed a symbiotic relationship with mankind. We cultivate them and (generally) take good care of them and make sure the species continues to thrive, and the plants keep producing more of those lovely lovely cannabinoids that made us want to grow the stuff in the first place!

I got a short length of hosepipe and put it through a hole I made in the lid of one of my water bottles, then sealed it up with silicon on both sides. Makes a world of difference when you have a crowd of plants growing and just need to water a couple in the middle.

So find the equivalent on ebay. Iwantoneofthose is an expensive place to buy anything, you can almost always find the same stuff cheaper if you shop around.

https://www.rollitup.org/view.php?pg=faq&cmd=article&id=70 Strain doesn't play much of a factor in this, I've never heard of strain-specific pH levels.

That's a real small space to put a hid in, I take it the height is 3'? Allow 8" for the pot/s, 6" for the space the lamp and reflector take up and at least 8" distance from the plant to the light, unless you shell out for an air cooled reflector. That leaves just 14 inches for your plant/s to...

https://www.rollitup.org/advanced-marijuana-cultivation/151706-uncle-bens-topping-technique-get.html

No, feminised seeds come from hermaphrodites. A common misconception is that this means the seeds have a higher chance of growing into hermies themselves. But if the parent plant was induced to become both sexes by fuxxing with the light cycle or another method, then as long as the parent was...

The potency depends on the strain, and how well you treat it. Autoflowering strains are made by crossing usually an indica with a ruderalis (hemp) although that's as much as I've ever bothered to find out on the subject, I would suspect the hemp genes would limit the potency somewhat, although...

But how do you explain the fact that there are parts of the human brain that are stimulated exclusively by cannabinoids? I just realised Idk nearly enough about this to get into a proper discussion, so I'm off researching, brb.

But why so much ducting? Everyone knows you should keep the ducting as short and straight as possible to maximise airflow. Mount them both horizontally, or vertically, whichever works for you, but there's no reason to have bends in the ducting to just take it through a filter and out of a tent.

What is the temperature outside the tent? Where does the exhaust go when it leaves the tent? It needs to go completely away from the tent, preferably outside the house, otherwise at least into another room. The intake and exhaust should be far enough away from each other that one does not have...

Depends on the intake temps really, if they stay below 75 I'd say 150-200 cfm would do, but you can't skimp on ventilation, it's what stops your babies cooking! It is far easier to manage temps if you get a fan bigger than you need, then run it on a fan speed controller, thermostat, or both...

That fan looks good to me, should easily keep a 54 cubic ft room in temp ranges, but you might wanna watch the humidity, don't let it get too low as it can cause stress. Until the last couple of weeks 50-60% is ideal but if it stays above 30 you should be ok. In the last two weeks of flower you...

Unlucky mate, go burn that shemale before it shakes it's seed all over your innocent little girls. Then find whatever caused it, look for light leaks during the dark cycle, and if you can't find anything, keep a real close eye on the rest.

It certainly looks like it would dry them faster, but to me the essence of a good tasting weed is in a slow dry and cure. I normally dry them over a week or two and then cure for at least two weeks, I did try smoking them after a quick dry, then after a slow dry without the cure, then quick...

This should answer any questions you have. https://www.rollitup.org/advanced-marijuana-cultivation/20319-seed-production-tutorial.html

The dark period is important during flowering because that is what causes the production of the enzyme that tells the plant to grow buds. During veg the main reason for a dark period is that there is little to be gained by not having one. I've tested 18/6 vs 24/0 and found that overall, the...

Looks like ph is out to me, if you aren't adjusting the water or nutes, then it's almost definitely that, tap water tends to be around 7-8, depending where your water comes from. You want it between 6.2-6.8 in soil. If you can't afford a proper meter, get an aquarium test kit, it's a little...