10 day old plants with shriveled leaves

[IDontExist]

Problem: Shriveled leaves

Medium/grow method: Coco with around 10% perlite

Feed: and supplements used: Dr. Earth Dry Amendments

water source: Dechlorinated tap water pHed between 6.0-6.5 using Blumats

Strain/age: Tropical Wizard, Night Owl 10 days

light used: 240w Quantum Boards dialed down

Climate: Averaging 75 degrees and 64% humidity currently

Additional info: The plants went the first 4-5 days with the water pH in the high 7's. The heater ran away on us and got up to almost 90 for like 20 minutes. Only a couple of the 8 plants seem to be doing this. Thanks in advance.

 

[iampepe]

Hello @IDontExist 90 degrees temps won't hurt them especially a short period of a few minutes. That top one looks like a mutation I've seen in autos, I believe it will grow out of that in another set of leaves or two. Usually leaf curl/cupping & leaf margin rolling are signs of over-fertilizing, High heat, to much light, over or under watering. The bottom one may have those curls on the margin because of the heat or your light may be too close. The long stem suggest to me the light may be a bit high or turned down to much, so I doubt the light curled the leaves. I wouldn't worry to much about it, I think your off to a good start.

 

[IDontExist]

Hello @IDontExist 90 degrees temps won't hurt them especially a short period of a few minutes. That top one looks like a mutation I've seen in autos, I believe it will grow out of that in another set of leaves or two. Usually leaf curl/cupping & leaf margin rolling are signs of over-fertilizing, High heat, to much light, over or under watering. The bottom one may have those curls on the margin because of the heat or your light may be too close. The long stem suggest to me the light may be a bit high or turned down to much, so I doubt the light curled the leaves. I wouldn't worry to much about it, I think your off to a good start.

Thank you for the quick reply and reassurance.

 

[Jackson]

They look fine to me @IDontExist

 

[Waira]

Mutie seedling on the top pics, likely will be sickly and weak with that particular set of signs,... possible light stress on the lower one I believe... how far away is the light, and how dimmed? Seedlings need less intense lighting initially....that, or it's just some odd growth, uneven happens in seedlings... RH% is good, aside from that heat spell,...

 

[IDontExist]

Here it is day 15. The lights were probably 18 inches and at the time of the first post and were around 15k lux according to my meter. They're a couple inches higher now but around 25k lux. We had them a little brighter but a couple plants were starting to cup and get crispy edges like the second pic so we dialed them back a touch.

 

[IDontExist]

This is the same strain from the last run, seemed to grow out of it a lot faster.

 

[Waira]

-- this is the second one of the same strain to do this? Hmm, either bad luck, or worse... your call to keep or ditch,...

 

[IDontExist]

-- this is the second one of the same strain to do this? Hmm, either bad luck, or worse... your call to keep or ditch,...

I think so, looks the same to me. Is there something I might be doing to bring out this mutation? I'll probably let it ride, a new one would be too far behind and it's better than having an empty spot.

 

[AutoNM3]

I think so, looks the same to me. Is there something I might be doing to bring out this mutation? I'll probably let it ride, a new one would be too far behind and it's better than having an empty spot.

I have exactly the same thing going on with one of my new seedlings this year. Two of them actually. I think one of mine to do it is a blueberry.