Leaves canoeing up, tips turning dark green.

[Skurge]

Some of the leaves are canoeing upwards and showing dark green tips (some edges too) and the center is a lighter green (almost yellow) in some areas. This all occurs on the uppermost growth (top 2 sets of leaves from the main stem). None of the lower leaves and secondary growth have these symptoms, but some of the center veins are pale/yellow. You can see one of the yellow veins in the first thumbnail.

I'm 99% sure that it isn't heat stress, my tallest is 13-14" away from my MH (cooltubed).

For me to feel any discomfort I have to hold my hand within 6-8" of the glass for several minutes, my skin is VERY pale and extremely sensitive to light.

Dedoverde Haze Auto (60% Sativa | 20% Indica | 20% Rud)

Pro Mix HP CC (Soiless mix, around 30% chunk coir, 25-30% perlite, remainder is peat PH 6.5 out of the bag)

Temps are 77-79F

RH 48-50%

Last feed (day 19-yesterday) was around 600 PPM PH 6.0-6.1

6 ml Sensi Grow A+B - 5 ml B52 - 5 ml Sensizym - 5 ml Carboload - 5 ml Rhino Skin in 5L of water (1.2 ml/l for base nutes, 1ml/l for additives)

Every feed has been between 6.08 and 6.3, seems like it drops more as I up the amount of A+B per liter.

Each lady got about 1L

The plants do have a constant indirect breeze on them. Two hurricane fans (set to low) one on each side, pointing upwards and towards the WALLS. Plants are being rotated 180 degrees daily.

The breeze is strong enough to cause some fluttering in the leaves and sway the stem no more than 1-2mm

If I remember correctly, most of the new growth came in with slight discoloration and evened out later on. The cupping seemed to get better for a couple days, but now is worse than it was to begin with.

Thanks for your time!

 

[A4]

Those plants look as close to perfect as I have seen any new grower do. The small amount of curl could be due to RH or fan but I wouldn't even think about changing anything. They are pristine bro! Good job.

 

[Skurge]

Those plants look as close to perfect as I have seen any new grower do. The small amount of curl could be due to RH or fan but I wouldn't even think about changing anything. They are pristine bro! Good job.

Ok thanks man... Got some killer anxiety going on and if I feel there's an issue my brain won't stop until receiving some reassurance.

 

[Weedman30]

Yea man they look good to me.

The leafs curling up could be the fan if you have it blasting over the top of the plants. Hence why only your top two nodes are feeling the effects. Maybe lower your fan a speed or angle it differently.

Besides that man they look great.

Rule of thumb with MH is hold your hand at the plant canopy and see if you feel heat from the light if it's hot on your hand its to hot on the plants and raise your hood.

 

[Renaissance Redneck]

Those plants look as close to perfect as I have seen any new grower do.

Ya beat me to it, A4!
I do always worry, though, when I see no pans to contain run-off. That's an invitation for salt build up....

 

[Skurge]

Yea man they look good to me.

The leafs curling up could be the fan if you have it blasting over the top of the plants. Hence why only your top two nodes are feeling the effects. Maybe lower your fan a speed or angle it differently.

Besides that man they look great.

Rule of thumb with MH is hold your hand at the plant canopy and see if you feel heat from the light if it's hot on your hand its to hot on the plants and raise your hood.

Well the fans are on low, and are to the sides of the plants aimed upwards and at the wall on either side to cause an indirect breeze which is constant. It's strong enough to cause the leaves to flutter and sway the stem very little (1-2mm).

I've been doing the hand test about 1-2" above canopy level, I would say it's warm, but could hold my hand there all day without considering it to be discomfort. My skin is very pale and sensitive to light btw, if I'm outside on a summer day with no shirt for longer than an hour I'll end up in pain and coated in aloe vera for a week.

Ya beat me to it, A4!
I do always worry, though, when I see no pans to contain run-off. That's an invitation for salt build up....

Following Tang's Feeding Schedule and flushing before changing to bloom nutes.

 

[Renaissance Redneck]

Following Tang's Feeding Schedule and flushing before changing to bloom nutes.

Not saying you're wrong, Brother! That's just the fun of growing, we all find what works for us!
I'll never admit it, but A4 actually got me to quit torturing my gals with my once preferred, brutal soak and dry method.

 

[Skurge]

Not saying you're wrong, Brother! That's just the fun of growing, we all find what works for us!
I'll never admit it, but A4 actually got me to quit torturing my gals with my once preferred, brutal soak and dry method.

Haha well I'm a total noob aside from the countless hours of reading and planning. Decided to follow Tangs Schedule because everyone seems to have good things to say about it, and it's very easy to understand. I'm watering lite and often (about 1L every 24-36 hours)... For the first couple weeks it was 500 ml every 36 hours or so.

Couple more questions while you pros are around.

It seems like the top couple inches of my soil are drying out last. Example - I water with 1L on day 18, about 28 hours later the pot is very light (at least 2/3 lighter), the top of the soil is dry but moist directly underneath. Maybe this is due to lack of roots near the surface and moisture rising?

Also I'm thinking that maybe it is heat stress/light intensity... My tallest lady will usually bend in toward the light after a feeding and return to an upright position within a few hours... At the moment, she's bending away from the light like shes trying to escape it.... My issue is she's about 10" tall and I have one runt sitting around 6".... So if I continue to raise my light, the runt is going to get less and stay all runty?

 

[A4]

my once preferred, brutal soak and dry method.

Soak and dry, lol, how is the new method working out for you? I tell a lot of people to stop the abuse but I never hear any feedback on what people think once they stop. I just figured everyone ignored me.

 

[A4]

Haha well I'm a total noob aside from the countless hours of reading and planning. Decided to follow Tangs Schedule because everyone seems to have good things to say about it, and it's very easy to understand. I'm watering lite and often (about 1L every 24-36 hours)... For the first couple weeks it was 500 ml every 36 hours or so.

Couple more questions while you pros are around.

It seems like the top couple inches of my soil are drying out last. Example - I water with 1L on day 18, about 28 hours later the pot is very light (at least 2/3 lighter), the top of the soil is dry but moist directly underneath. Maybe this is due to lack of roots near the surface and moisture rising?

Also I'm thinking that maybe it is heat stress/light intensity... My tallest lady will usually bend in toward the light after a feeding and return to an upright position within a few hours... At the moment, she's bending away from the light like shes trying to escape it.... My issue is she's about 10" tall and I have one runt sitting around 6".... So if I continue to raise my light, the runt is going to get less and stay all runty?

The top of the soil is normally going to dry out just because it is the closest to the air and air pulls moisture out of the soil. Not that big of a deal unless you grow organic then it is a BIG deal. You can mulch the top of your container with almost anything and it will stop the evaporation.

As for your runt, that is probably genetics more than anything and keeping the light lower won't help the issue. Plants stretch for light so if you raise it some the little one will catch up to the tall one eventually, or come close anyway, but you will have a little larger node spacing. Not a big issue.