OGK Scrog, what do I do?

Scrogging my first timer grow.

I have some plants that are a bit larger than 4x4' each, day 17 flower here. The screens they are overrunning are 4x4 tied to 4ft wire shelf frames. 10 and 15 gallon fabric pots (10 in pics). ~75F +/- 2-3 day/night, ~52-58% humidity.

I'm at a bit of a loss as to what to do with the canopy and pruning during flower. I've got two layers of garden wire fencing in there, the second was more intended to keep things from falling over once flowers bulk up.

Looking for experienced advice about what to do with these plants and a plan for pruning foliage back from where I'm at now. Advice on how to do better next time is also welcome, thanks! Flowers don't look very big, sort of pop-corny?

Ugly leaves in 2nd pic are from too much fan exposure, I redistributed fans to calm down the air there a bit yesterday.

I had been letting fan leaves die on their own then removing them and just pruning up to the screen. These pics are before I did a dead leaf clean up for the day.

I'm going to bend down some of the taller growth spots, daily remove dead fan leaves and look to trim up the smaller stuff near the bottom screen some more, but otherwise just let it run. Not sure though, haven't read enough about big plants. The zone between the two screens (2nd vertical pic) is a bit of a bird's nest, looks concerning to me but I'm uncertain? I'm tempted to get in the the middle there and start snipping but don't want to hack too much out either?

My Dr.Meter said I'm cooking them a bit so lights got raised to bring canopy tops back down to 50k-60k lux.

I'm also a bit worried that I'm going to crash into a wall of salt at some point by feeding with the blumats. I read somewhere that trying to flush when doing blumats in big pots just leads to problems and that you can make it to a 10-12 week harvest without issues if you feed only Jacks 321 mix at full or close to full strength the whole time.

How big is that pot?

10 gallons, There's another like it and two 15 gallon fabric pots not pictured.

My 240v for flower room install delayed 12/12 flip a couple weeks past where I wanted it.

Looking good man!.. your flowers look on par for 17 days, don't sweat that. Looks like you're through the "stretch", so you shouldn't get any more vertical growth at this point if only slightly. Good job!

Yeah bud i would consider defoliating i.e cutting fan leaves off in the canopy, but be very careful not to remove too much. You will still get great flower production as is, personally i feel removing too many leaves now into flower will do more harm than good! Great set up, and the plant looks great

You can clear out any larf you dont want, but do it now, and gradually... take some here, wait a few days, take some more, wait, etc.

Thanks, worrying over these plants is going to give me a nervous condition...maybe they'll expand my count.

I was thinking about getting more cheap fans moving more air up through the center of plants and/or across the canopy, I don't think there's much air movement when checking in the middle of of the plants. The room is fairly hurricane like though.

I was more than halfway expecting advice to be to aggressively prune the middle now. Glad I did not start down that road on my own initiative. I'll give it a gentle larf cleaning instead, and lightly trim the thickest parts of the scrog nest. Thanks again!

It is a bit of an odd room and the camera's not helping me out much, here's a few shots that show plants better top to bottom in one shot in case I managed to hide any problems in that first attempt.

Looks great! Airflow is always good and helps keep pests at bay as well as have the buds grow more

Looking good buddy. Keep up the good work.

Thanks for taking a look! Glad that counts as good work too! I'm looking to keep my focus locked on this for the next months while hoping it is a bit lower stress on me next round.

I feel like I'm about to lining up a curing space and then riding out the end of flowering is all I've got left until chopping. Finally about done installing fixtures and am mostly just maintaining all the things, feels like way less work.

UV-A+B stuff sounds worthwhile and might try to toss one of those T5 lights in for each plant once I figure out a bit more there, they're competing for my money with the fancy soil Ph meter.

Bought some pricey seeds at a discount a month ago and got them sprouted recently as well. It will be interesting to see other strains grow and get to compare them all.

While waiting on the government stimulus for that Ph meter I am also still worried about salt buildup. I went ahead and tried a runoff test that I had read about. I ran 6-7 gallons of half strength nutes thru one of the 15 gal pots until I had 3-4 gallons of runoff. The runoff tested at 3200ppm!



I am seeing some leaves, like in lower right of pic, with bits of nutrient burn, or at least that's what it looks like to me in my ignorance, some of it is probably old or current fan burn but the runoff testing has me worried. I'm thinking I'll either do a hard flush until ppms come down by pouring ph water until ppms are normal then top off with a feed OR just switch to 1/4 strength or 1/2 strength thru the blumats and hope that brings it down? What works best? How bad is the 3200ppm runoff?

Any other ways to test root zone saltiness?

Day 22:

XtraGood said:

While waiting on the government stimulus for that Ph meter I am also still worried about salt buildup. I went ahead and tried a runoff test that I had read about. I ran 6-7 gallons of half strength nutes thru one of the 15 gal pots until I had 3-4 gallons of runoff. The runoff tested at 3200ppm!

View attachment 4536983View attachment 4536986View attachment 4536994

I am seeing some leaves, like in lower right of pic, with bits of nutrient burn, or at least that's what it looks like to me in my ignorance, some of it is probably old or current fan burn but the runoff testing has me worried. I'm thinking I'll either do a hard flush until ppms come down by pouring ph water until ppms are normal then top off with a feed OR just switch to 1/4 strength or 1/2 strength thru the blumats and hope that brings it down? What works best? How bad is the 3200ppm runoff?

Any other ways to test root zone saltiness?

Day 22:

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3200 is pretty damn high. Are you getting good run off every time you water/feed? IF not, that's why your getting such a high reading, you're letting it build up in there. We get about 3/4 of a gallon of run off on each plant, and have never fed over 1150ish.. and I have still seen run off water (out of curiosity) at 1465 or so.

I have been running full strength with no intentional runoff, though blumats have run a bit extra here and there and I have top watered for agsil and gnat treatments that cause some runoff. There is a drain system. Overall very limited runoff. I have been concerned about salt buildup from the start but had read it was doable to run blumats full strength for 8-9 week harvest time strains or tacking on a 1-2 week pH water flush thru the drippers if it runs long. Well that may be with added CO2 or something to soak up more of the nutrients, cause I'm doubting I get to finish without problems if I keep doing what I'm doing because of nutrient buildup. I would like to just drop to 1/4 or 1/2 strength nutrients, test again in a week or two, and finish by continuing without much runoff as I have heard flushing in this situation is bad because the salt layers up worse even if you do make lower ppm drainage channels. Other option I'm looking at is flush hard with pH water and top with nutrient solution, then finish with blumats and 70-90% strength jacks hydro mix?

I flushed half of them with low nutrients until runoff water reads ~1200-1400 in fresh container. I'm switching feed to 600-700ppm total for both sets to see which does better. My tap water has 150-200 ppm most days ,largely of cal and mag.

Still going good as far as I can tell. I'll probably flush again at some point. The pots are small relative to the plants as far as I can tell, the blumats keep feeding them and the plants keep making the 10 and 15 gallon pots of coco look smaller and smaller.

I'm still feeding 600-700pmm total and planning on flushing again since the plants just drink it all up in the small pots.

My current consideration is whether I should lower the PPM even more and "starve" the plants as they finish up, I had read that this isn't worthwhile, but since I've had high salt runoff a week or two ago I'm wondering about it again. Use 1/4 strength or less jacks 321 mix?

I am leaning toward just going more flushes at 1/4 strength and keeping the res at 1/2 strength until harvest. Original plan was to finish at full strength but that's not going to happen.

I've got about half the hairs turning orange day 37 after 12/12 flip:


Also will the high plant size to pot size ratio effect how they finish up?

I am back in here comparing my burnt leaf tips to the older pictures, I don't think it looks horrible, but I don't know if what I think is correct. Looks like it has gotten a bit more nutrient burnt but it is probably the nutrient burn from the high ppm a while back finishing up with the damage it is going to do? I think at this rate I'll make it to the finish line before it gets me? 44 days since 12/12:

Getting chunkier, not seeing any amber yet.:


Current plan is to check runoff again soon and try to finish in the 600-700ppm range.

Read this article about OG Kush while trying to figure out whose OG Kush I have, it seems to narrow it down a bit but still no definite answer. Its from a multi re-gifted cutting only labeled OG Kush .

56 days after flip. I think I might have a bit of foxtailing? I think they were foxtailing earlier too but it was a bit early for me to tell?

Hoping to chop pretty soon but not too soon.



I think its probably either the pH issue bellow (ran too low too long?), or the earlier nutrient load up in the coco, or there might be a root problem I haven't found yet. I don't think it's the lights because the side buds have it and I don't think it is genetic because OG Kush hasn't done much foxtailing in the pictures I've seen of it? Both the 10 and 15 gallon plants have it about the same, same for plants under different lights too.

Checked drain pan runoff after a flush yesterday 1500ppm and 5.3 pH, gave a bit of extra flushing down to 800-1000ppm and I'm swinging back up to 6.4ph feeds from ~5.6-5.8. Also moving from 1/2 strength to feeding ~1/4 strength overall with 50% reduced Nitrogen and 50% extra Epsom till chop. (I wanted more sulfur and heard reducing nitrogen late wont hurt if only the inner and bottom fan leaves are dying by yellowing and drying which is what I'm getting)

PS: Also this thread is interesting after reading that og kush article in the previous post: https://www.rollitup.org/t/is-this-the-real-og-kush.1017204/page-2

I've got a drying room setup to run and a collection of jars and buckets to cure in (I might try to use an air-pump with some buckets). Drying room is running 61-64F and ~56-59%RH pretty steadily, let me know if this seems like the wrong temp or humidity settings for drying...I just borrowed the numbers from a jungle boys video and a few threads.

I'm planning to hang some inside cardboard boxes in the drying room and put Ecowitt sensors inside to see what's happening vs open air. Not sure if I'll need cardboard layer to slow drying.

(also posted a few more pics over HERE while learning about drying&curing)