Random red stems, yellowing leaves...

[WeirdWiredWolf]

I'll get some better pics tomorrow in regular daylight. Last pic is a leaf I removed earlier tonight.

I've started noticing over the past week (this seemed to start shortly after a plain-water-to-runoff watering on 4/14) red stems on random leaves that first started appearing with two stems growing from one node; one stem was red and the other was normal. The twin stems had a 'knuckle' at the base; at first I thought that was a random mutation except for the color. Some older, lower leaves had yellowing/bronzing. All signs I can see point to either phosphorous, potassium or maybe both?! I haven't changed anything with my feed/water schedule other than that flush...go figure that threw something outta whack.

I'm removing at least one yellowed leaf hand per day and now seeing it on upper leaves, although it still seems to be confined to random stems. I know I've kept these in veg FAR longer than I wanted to; every time I think I'm going to flip them something happens that means I can't. Are they just getting too big/should I repot with fresh soil? One of the pots is showing white residue on the sides.

Temp is higher than I'd like again (84F); RH is in the 30s somewhere with a passive evaporative humidifier (unglazed ceramic stones).

 

[Chefbjy]

I wouldn't just be taking leaves off untill you know the problem has stopped. What size pots are you in? How close are lights. Ph? Humidity is kind of low for veg and if you feed heavy it will take up a lot of nute water in unhealthy amounts.

 

[WeirdWiredWolf]

2 gallon pots in a 2x3 tent, light is as high as I can get it currently, about 12" above the present canopy (I screwed up LST big time earlier on and now just trying to keep things as flat as possible relative to the netting which is 9" from the bottom). I can probably get another couple inches by replacing the hanging hardware. RH fluctuates between 35 and 50 depending on ambient temps and whether I remembered to refill the humidifiers that morning...numbers would probably be better if the tent were in my room, right now it's in a corner of the living room which doesn't get a lot of airflow if the air conditioner isn't on. PH is around 6.4.

I've been pruning mainly to expose soil for watering and prevent crowding as much as possible...they seem to be growing faster than I can tie them down (I don't have anything tied to the netting yet; they're bushy enough that I have to take them out to water fully).

 

[D.A.A.S.69]

Hello WWW, that looks like your Led has bleached some of your leaves to me, it needs to be at least 16-18inches above your canopy. Good Luck

 

[Chefbjy]

2 gallons hmmm. They look big for2 gallons. I'm leaning towards root bound. And as Daas said your light is pretty close. My 2 buds.

 

[WeirdWiredWolf]

Yeah, they's huge. Comparing photos from the day I got the new light and today is just....holy shit. Few more pics of the stems in question. I'm not finding any more dying leaves for now. I have a 3gal pot somewhere so can repot one now at least....I may have to concentrate on one at a time, it's a stretch fitting two 2gal pots in there (because of various issues, I can't start flowering until 6/1 at least, shooting for whenever my bottle of Grow Big runs out). Doing a bit more pruning and tying down today--yep, they grew even more--and tomorrow I'll try to get some more height with the lights and see if I can save this.

 

[Chefbjy]

If it was mine 5gallons fabric pots would be the final home I use 7 gallons just to be safe. If you can't fit them in there you may want to invest in a bigger set up or find a place you can fit them into. 2 gallons how many have you got? With limited space you should probably keep your numbers down unless you can care for them. You can grow some monsters in 3 gallons but still pushing it imo.