Brown tips?

I'm in the beginning stages of my first outdoor grow. I just started germinating my collection of seeds and they're looking really healthy.

I just transplanted them(allbeit a little too early) into Royal Gold Tupur. They're still young so i dont want to burn them with too much direct sunlight, so i put them out in the sun first thing in the morning until around 1pm. Then i bring them right inside my garage but close enough to the door where my light meter still reads 400L until around 5, then gradually decreases. Then when it gets cold (california spring nights) i bring them into my makeshift garage setup for the night.

Now...back to my concern, now that you know my general process. Just one of my babies' leaves are browning at the tip. Its just the 2 bottom leaves though. The plant itself looks healthy. Im just wondering what this could be a symptom of?

Brown tips are usually from too many nutes and ferts but im not sure in this case.
What ferts or nutes are you using?

It looks like only one tiny tip of a leaf, is that correct?

Stealthstyle said:

Brown tips are usually from too many nutes and ferts but im not sure in this case.
What ferts or nutes are you using?

It looks like only one tiny tip of a leaf, is that correct?

Click to expand...

G/O (general organics)cold pressed seaweed
G/O CalMag
G/O veg formula "grow"
And an organic compost tea from my local hydro shop. Im only using 1/4 of what the bottle calls for, and i willgradually increase and change the recipe as they get older. I feed them this recipe every other feeding. The other is just PH'd water.

All the other ones seem to love it and show nothing but good signs. Aside from one that has heat stress at the moment.

And yes, just the first two leaves at the bottom. Like, right above the cotes