Need help with odd looking early growth

[hukaraptor]

Hey folks,

Been out of commision due to winter months and not being able to keep the temps up in my tent here in Minnesota. I found out (not the hard way, thankfully) that running a space heater with an extension cord is a huge no no.

The details:
3x blue dream fem photoperiod
3gal fabric pots 100% cocoloco
Dyna-gro nutrients
HLG100 Rspec LED
2x2x4 tent
Temps: range from ~66-68 with the light on, 60-62 when it is off
Humidity: 56-60%

This is my first run with this light. We are a 3 weeks after putting popped seeds in the pots. As you can see, the plant in the lower right looks normal. The other two, the leaves are so rough feeling. All 3 seem a bit behind too. I'm thinking this is possibly due to the colder side of temps? Is it possible they are too close to the lights (~18in)? Let me know your thoughts on how I can dial this in.

Mahalo

[1toke]

3 leaf plants usually sign of stress. Possible it is the temp but I grow in my cellar about same temps in Northern New York. Sometimes it is just genetics. I have had 3 leafs outdoors and know I didnt stress them. After it got up a couple feet high started growing normal leaves. I personally wouldn't worry about it but that's just me.

Good luck!

[dirtymike]

To cold ,68 highest temp at early growth stage. Might be PH off a little, 100w at 18 " , probably perfect distance.

[ductwizard]

hey dirty, i'm confused, 68 is the highest the temp should be this early or am i reading what your saying wrong? and if i am, what is the ideal temp. at this stage

[dirtymike]

His temp max at any time was 68. A little to cool for most strains.

[Smallgrow]

Defiantly warmer, look for 75F+ and 60-70%RH , maybe go down to 65 68 at night
you’ll need to get your heater figured out I’d say

[ductwizard]

thanks, i need to wait a cpl. more weeks. patience has never been my strong point

[dirtymike]

Growing dope will teach you patience, if not you won't get stoned like the rest of us tokers. Im sure that is the condition you are craving. As I do too.

[Smallgrow]

Yup patience is one of the most important grow skills