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That looks exactly like moisture stress, the leaves were trying to conserve/keep mositure (by cupping), it could be because of heat and/or dry conditions (+ powerful fan? :) It only takes a few hours of dry and/or warm environment, and the leaves will stay that way even after problem corrected...

There are too many variables, we all understand this topic is about removing leaves ... but... When? How much? How often? What goal? There is a lot of different ways to prune during 3 months. I guess there is no real answer to this issue, because the debate itself is not defined precisely...

This says it all. You are pissed because people have several different opinions on the internet, however you also said something like "I don't learn anything, everybody are saying the same thing over and over"). So because of these different opinions, and discussions, are "misleading" - you'll...

For what it's worth, I've had "nanners", or pollen-sacks, in the top of my buds (just like in your picture) a few times, and to me it happens with regular seeds just as often as feminized (simply my personal experience). If it happens late in flowering, I never kill it, I continue to grow it...

You tops (new growth) seem yellow, if so it could be lack of Iron or Sulfur, or some immobile nutirent. Multiple symptoms, only you can really figure it out for sure (like 99% of the questions in this forum).

Looks like an immobile nutrient (top yellowing), my guess is Ca or Sulfur. Edit: It was just a guess, as other factors like PH and environment is important to know.

I always water "in the morning" (after light on), at least when I feed. Don't even remember why, it was something I read years ago. Overwatering is not about the amount of water you give, but how often you water (the frequency). When you "finally" water then saturate them, then let them dry out...

After 7 weeks with no drainage, your roots could be underdeveloped (your roots never needed to grow in search for more moisture). IF that is the case, it'll take a while for the plant to drink it all up (lack of roots). You could try to "wick" some water out (a papertowel under the pot...

Red light (like for flowering) is very good for cloning, but it needs to be weak (almost indirect).

@The Yourshire Man: "Dude, running a single bare bulb is pointless." Why is that? I'm about to do exactly that, and as long as the HID-bulb penetrates all of the plants - the yield should be great. I'm not growing large-scale as you, I'm simply using a single 250W HPS to keep myself with pot...

Sorry if a little off-topic. The best tool we humans have to find any objective truth, is the scientific method: "The chief thing which separates a scientific method of inquiry from other methods of acquiring knowledge is that scientists seek to let reality speak for itself, and contradict...

I use NoScript allowing only rollitup.org, and this works great on all cannabis-forums I've been on. But this site - if you do not allow google tracking (scripts from google), then the formatting when writing posts (replying etc) does not work. It all comes out as one single line. Why is this...

I'm about to set up my first vertical bare bulb for the first time, after years of growing horizontal with reflector. But your bulb is so high up, which kind of miss the point of vertical doesn't it? (A bulb puts out very little light out the tip, it's almost like you could have used a parabolic...

400W HID touching the plants, I don't understand how the bulb can be cool enough - you even say you have no fan. Are you growing in a freezer :-)?

When going vertical, go all vertical. Those horizontal bulbs at the sides makes little sense to me as HID puts out almost no light from the tips, maybe add them to the vertical height instead (4 bulbs in center instead of 2?). If you have several plants surrounding vertically hung bulbs, add...

From my perspective in Scandinavia, I know almost nothing about legal-for-medical-use (in some states). Still, I can't escape the feeling that the medical card has been played too hard, and now we're starting to get blowback instead of further legalization for everyone. I hope we focus more on...

I'm sure you have a good reason, even a scientific one. I have no science to back my claim up: 3 years of growing with only feminized seeds - without a single hermie. Believe it or not, I've only grown regular seeds once - the last grow I did - and that was the only time I got hermies! I know...

It did, greatly. Thanks! I wasn't able to give rep, don't know why. I was told PL-L is like T5 tubes but half length because they are bent like that. Don't know why they sell only 6500K and 25000K (or one of each), or why this is unusual. Dimensions are: 59x20x5 cm(inches: 23.6 x 8 x 2). I...

I'll ask again. Any input is greatly apreciated! Please read, easy question. I asked if 110Watt PL-L fluoros (9600 lumen pr bulb, 2 bulbs) would be enough for a couple of mothers, and a vegging a few small clones (they root elsewhere). They will flower under vertical 250W HPS, so they don't...

6500K or 25000K. I could buy one of each... it seems 25000K has a both blue and red in it. BTW: I know a little abot spectrums, what I need is confirmation that my choise of lightning is OK for my new setup. I've described my needs, and it's the penetration that I'm worried about.