Wavy Leaves - anything to be concerned about?

[Yozhik]

Problem:

• light green leaves that are wavy or rippled in appearance [see photos]

Medium:

• Plagron lightmix

Feed:

• B-52, Voodoo Juice, Piranha ... 1ml/l ... 1 to 2 x daily @ 75-100ml per feeding
• very recently introduced Sensi Grow A and B, but the wavy leaves existed before these were added
  
• pH measured EVERY feed with calibrated BlueLab Combo ... 6.1 to 6.3 as a result of advanced Nutrients 'pH perfect'
  
• not watered at base of stem - feeding done in a circle on the natural drip line of the plant; i.e. in a circle with a diameter determined by the leaf span.

Strain:

• Sweet Seeds Devil Cream, from seed, 8 days above ground.

Climate:

• Max ambient 27C
• Min ambient 24C
• RH% 50-60

Lighting:

• 1 x 600w at 30"
• ran 24/0 for first 6 days
• have swiched to 20/4

Ventilation:

• Can Fan Max Pro 200, controlled by digital temperature controller as 'cooling'
  
• 8" passive intake
• oscillating fans in tent to circulate air constantly

Other:

• 9 plants in tent,; total of 4 strains.
  
• Sweet Seeds Cream Caramel, Cream Mandarine, and Killer Kush NOT showing light green leaves, nor wavy/rippling leaves; i.e. it seems strain specific to the Devil Cream.

Photos:

Wavy leaves ... really difficult to accurately replicate the true colour, which is more of a lime green than a darker green.

Shows wavy leaves ... the dark patch is a SHADOW from the ripple ... it is not discolouration

Here you can see the Devil Cream [on right] with the rippling leaf ... also showing both a Cream Caramel [top left] and Cream Mandarine [lower left] that DO NOT have the wavy/rippled leaf, despite being the same age, in same tent, same tray, same light, same sized airpot [6 litre], same medium, same feeding. You can also see a difference in colour between the Devil Cream on the right and the other two plants, although the HPS makes it difficult to reproduce it accurately.

Is this something to be concerned about?
Or is this just one of those things that happens in early growth, and it should correct itself with more time?

 

[Hazy]

The only thing that catches my attention is the fact you say you are watering 1x2 per day, could possibly be over watering. Weed likes wet and dry cycles, meaning you water, wait until your moisture meter reads anywhere between ¼ and half way on the needle. Before i start a grow i soak the soil 24hrs before planting, then they won't get any more for around 5-6 days then they are feed and watered and i wait again till the soil is nearly getting towards the dry side, Just a thought.

 

[Yozhik]

Thanks Hazy!

The Airpots are a real mind f&%@ ... 'cos whenever I do the ol' "lift 'em up to see how heavy they are", they are light, light, light.
When I watered less, one of the Cream Caramels became the Leaning Tower of Canna ... since resuming the micro-feeds, its perked up again.

OK ... will switch to one larger feed.

 

[Hazy]

Perhaps ask TaNg how he does his…he's been using them for a while and gets great results…. When you pour water in, does it not pour out the holes?

 

[Yozhik]

Perhaps ask TaNg how he does his…he's been using them for a while and gets great results…. When you pour water in, does it not pour out the holes?

No.

Each watering is maximum 100ml.
The current 'drip line' is probably midpoint between centre and edge of pot, which then naturally leaches in both directions.
No water comes out of the sides.
There is no run-off.

 

[Dazed]

If your feed going in 6.1-6.3, your soil could be just under that which is slightly too low. The light colour and leaf curl could be down to that.

 

[Yozhik]

If your feed going in 6.1-6.3, your soil could be just under that which is slightly too low. The light colour and leaf curl could be down to that.

Good point.
TaNg says his tapwater is at 7.4, which he doesn't touch, so maybe the soil is running a little acidic?

I'll adjust to 6.5, which should be right in the sweet spot and keep monitoring.

 

[Waira]

Yoz-- ...seedlings like even, consistently moist soil, top to bottom,... no wet/dry stress for them at this stage,... however you can, check the moisture a couple inches down, and confirm there are no wet/dry patches,.. if more water is needed, a sprayer can deliver it nice and evenly near the seedlings base, hand water the perimeter areas if needed,... that said, some young leaves may star growing out a bit unevenly, as tissues expand,... dry media can cause, or worsen this,... I hear dialing in the driplines can take to tinkering! Did you set the up before planting, so see how they kept things watered?

 

[Yozhik]

Yoz-- ...seedlings like even, consistently moist soil, top to bottom,... no wet/dry stress for them at this stage,... however you can, check the moisture a couple inches down, and confirm there are no wet/dry patches,.. if more water is needed, a sprayer can deliver it nice and evenly near the seedlings base, hand water the perimeter areas if needed,... that said, some young leaves may star growing out a bit unevenly, as tissues expand,... dry media can cause, or worsen this,... I hear dialing in the driplines can take to tinkering! Did you set the up before planting, so see how they kept things watered?

Thanks Waira!

Sorry - I may have used the wrong term when mentioning 'natural drip line'.
It's what I call the line around the plant where the water would normally drip.
In my head, I see the canopy as a natural gauge for where the plant wants the water.
So, for example, when it rains, the natural canopy would funnel the water line to a circumference which would mirror the diameter of the canopy, to - I assume - perfectly feed the root network under the surface.

Intelligent design.

In an established plant or tree, you seldom see rain watering the base ... the canopy directs it to [what I refer to as] the 'natural drip line'.

Thanks for the info/tip re: consistent moisture.
As a result, I've altered my watering to ensure the feed is reaching a deeper level, and will cut back on the frequency so as not to waterlog the medium.