Plant problems

[jwmvh]

I’m a first time grower. I’m using a 3x3’ AC Infinity tent. My plants are looking burned. I had the light, that came with the tent, about 18” from the tops of the seedlings. I raised the light to about 24”. Can someone tell me what’s wrong with my plants from the attached pictures? Thanks in advance.

 

[dirtymike]

All we could give would be a WAG until we knew what that soil mixture contains. Looks burnt

 

[golfnrl]

Welcome aboard @jwmvh. What is the grow medium? What are you feeding if anything? How often have you been watering? How old are your sprouts? At the bottom right hand side of this page there's a menu called Growing Basics. If you haven't already, I'd highly suggest you take a look at the info there.

 

[Gator]

Test the soil temperature,I think they're being burnt from the bottom, what is your light set at, turn it down if it's over 25% power

 

[Gator]

You might be able to save at least one

 

[Gator]

Also, how often do you water, seedlings don't need much,no more than a shot glass at a time

 

[Gator]

Photo plants or auto flowers,if they're auto flowers your done,start with photo plants, much more forgiving when you make a oops

 

[Chipmunk]

All the above and twice more!!!

 

[jwmvh]

The growing medium is about 50% coco coir, 30% perlite, and 20% earthworm castings. They’re photo period. The sprouts are 2 weeks old. I’ll read growing basics. What growing medium is best? Thanks everyone!

jwmvh

 

[Allotrope1000]

I'll make a guess that 20% worm castings is too hot for the seedlings.
Possibly a grow medium choice error.
I'd start over with straight 70/30 or 50/50 c/p, GH Flora Trio. Please read Growing Basics under Quick Links below before restarting. pH measurement is necessary.

 

[Gator]

Start with "soil", very easy to work with, and you can play around with the mix

 

[golfnrl]

If I was starting from scratch I'd go 70/30 coco/perlite with the GH trio or something similar. I use CX horticulture nutrients.

Coco is very forgiving. It's almost impossible to overwater.

Don't give up. Being photo plants you can nurse them back to health. In fact, I'd transplant them to new medium w/o the worm castings.

If you stick with coco you'll need a PH pen. You don't have to break the bank but get something reliable. If the budget won't allow a pen try some PH strips. PH will be the most critical measurement you will take. Of the most common causes of MJ plant issues improper PH is at or near the top of the list.