ital farmer
Well-Known Member
I assume this problem is from the heat and the fact that they dried out a little too much. I gave them a big drink of water (without nutes just in case) this morning; hopefully they'll stabilize without much more effort. HD didn't have in-line fans so I'm still looking. Not sure if I should try a more powerful computer fan or move straight to something a little more heavy duty. There are PC fans that have higher CFMs than average 4" in-line fans though, so I don't know what to think. I also think that the fact I am working with a 2.75" opening isn't helping. I'd like to increase that to 4" or more but that is going to be a bitch considering it's two layers of pretty thick steel I'd have to cut through. It was tough enough to cut through the shelves.
Here's a look at the stressed leaves.
And a zoom of the same pic
Wider view to show the spread and distribution of the problem
Another plant
My temps stay near 100 or even a little higher. I may unscrew a couple bulbs. At this point a little less light is probably preferable to them getting scorched. Another option I'm considering is adding a fan to the intake. I know that's not the preferred method, but I figure it may increase the effectiveness of the exhaust fan.
You're welcome to post thoughts on the problem, but for now I'm going to just water them well and wait and see. Let me know if you think it's something besides heat. I'm up to full strength bloom nutes. I don't think I introduced those nutes gradually which may be a problem. I figured if they were at full strength "grow" nutes (20-6-16) they could handle a direct switch to full strength "bloom" nutes (9-21-12). But now that I think about it, they weren't used to getting that much potassium. Maybe that's burning them? Like I said, I doused with plain water and I'll probably reintroduce nutes gradually just to be safe. Can't hurt. Conversely, maybe these autoflowering dwarfs need more Nitrogen even when flowering since they are continuing to develop branches, etc. Mabye the bloom nutes are not providing enough Nitrogen? I'm starting to think I should've gone with an all purpose 16-12-16 formula throughout the whole grow since the veg/bloom cycle on these plants is so weird. I haven't heard of that being a big problem for others though.
Here's a look at the stressed leaves.
And a zoom of the same pic
Wider view to show the spread and distribution of the problem
Another plant
My temps stay near 100 or even a little higher. I may unscrew a couple bulbs. At this point a little less light is probably preferable to them getting scorched. Another option I'm considering is adding a fan to the intake. I know that's not the preferred method, but I figure it may increase the effectiveness of the exhaust fan.
You're welcome to post thoughts on the problem, but for now I'm going to just water them well and wait and see. Let me know if you think it's something besides heat. I'm up to full strength bloom nutes. I don't think I introduced those nutes gradually which may be a problem. I figured if they were at full strength "grow" nutes (20-6-16) they could handle a direct switch to full strength "bloom" nutes (9-21-12). But now that I think about it, they weren't used to getting that much potassium. Maybe that's burning them? Like I said, I doused with plain water and I'll probably reintroduce nutes gradually just to be safe. Can't hurt. Conversely, maybe these autoflowering dwarfs need more Nitrogen even when flowering since they are continuing to develop branches, etc. Mabye the bloom nutes are not providing enough Nitrogen? I'm starting to think I should've gone with an all purpose 16-12-16 formula throughout the whole grow since the veg/bloom cycle on these plants is so weird. I haven't heard of that being a big problem for others though.