Not sure what the problem is! please help if you can!

I’m a new grower, first time actually. I have 3 plants, 2 of which are about 18 days and the third is about 14 days. I had to transplant them a few days ago because they were already out growing their containers (changing color slightly, roots were growing out of the holes). I damaged a few roots in the process. Not many, so I was told they would all recover.

It seems they are for the most part, but since I transplanted them I also noticed that the youngest plant is starting to yellow on the leaf tips. Could this be from root damage, being closer to the light now that they are in bigger containers, or a nutrient burn from the soil I’m using? Thoughts?

also I thought I’d include a little about my set up. (very new to this so it’s kind of trial and error and I'm still purchasing my set up as I’m going along)

I’m in a 2x2x4 grow tent, I have accumulatively about 110 watts of full spectrum light give it take. (I just ordered more high quality lighting, not here yet, 600 watt mars hydro). I’ve got a carbon filter and a fan with ventilation. I also have a humidifier, and have been keeping temps around 70-75 and RH at about 70. They’re on a 24 hour light schedule but I am about to switch them to 18/6 as they are just starting to get a smell, and develop 3-4 nodes which puts them all into veg. I’ll also being lowering temps/ humidity slightly. Biggest problem is that I started my plants in organic miracle grow potting mix because that is ALL I had available and my seeds were germinating. I’ve since ordered better soil but I’m not sure it will be here in time. I purchased nutes but I probably won’t need them till later since I’m in MG soil. I also don’t know what type of seeds they are because I’m a newb who just used some bag seeds and thought I’d give it a go.

I also included pics of the problematic plant in comparison with its slightly older, healthier siblings. thanks y’all, any input is much appreciated. bongsmilie
 

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grou

Active Member
i cant see it clearly in that purple light, had similar symptoms once, later i figured it out it was light burn.
 
How far away are they from the light? That was my first thought too. It kinda looks like bleaching.
They’re approx 15 in from the light That’s directly above, but it’s only putting out maybe 75 watts so I didn’t think it would be too much, and it didn’t happen to the other plant right next to it which is slightly taller. I’m new to this though so I could DEFINITELY be wrong.
 

Cannichef_rodri

Active Member
They’re approx 15 in from the light That’s directly above, but it’s only putting out maybe 75 watts so I didn’t think it would be too much, and it didn’t happen to the other plant right next to it which is slightly taller. I’m new to this though so I could DEFINITELY be wrong.
I moved my light up about 6 more inches...let me know if you know what that spotting is?
 

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