Leaf burn and discoloration!

[martyrprojekt]

The problem:

So I am having some issues with a couple plants. I am seeing discoloration spots on some of the plants...Some lighter and some darker. I posted pictures for you to see.

Also, one of the plants is showing signs of nute burn? The funny thing is that I am not using nutes right now. Maybe it is light burn from my T5 light?

Are these signs of lack or calcium and magnesium?

picture #1 and #2 are showing a plant that is discoloring...I have one other plants that is showing lighter coloring. I did not post a picture of this.

picture #3 is showing a plant that has leaf tips that are dead...and it is also showing discoloration.

The rest of the plants are not showing signs of anything...look very healthy and are growing nicely since I lowered my lights to stop the leggy issue I was facing with Citral ( i have been this is common for this strain in seedlings)

FOR PICTURES PLEASE CLICK FOR MY GROW LOG!

My System:

Growing drip system hydro
no nutes...still seedlings
5 gallon res.
16 pants with 3 showing signs of these problems.
t5 light with 4 bulbs (hot and cold mixture)
lighting schedule on 18/6

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Happy Growing

-Martyr Projekt

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