Edges Gone Brown!!! (pic)

Sup dudes , just got home to check on my babies , and one of them has little brown edges , only on the lower leaves. You think this is nute burn or maybe from the hid? I lowered it a bit the other day , but the top leaves are ok. Check the pic its a little blurry but u can see what i mean.

Or do you think it could possibly be underwatering? It's ppp in a soiless soil.
It' drains quite well so maybe i havn't watered enough? I havn't really used nutes that would be too powerfull i always go qauter strength. Plant itself is about 10cm high , 3-4 weeks old.

maybe you are overwatering your plant holmes.

What kind off plant is that... Tha leaves look good..

If this is only occuring on the lower leaves and the top leaves are fine then its a safe bet that its not the light. How often are you feeding the nutes? Id say lay off em for about a week and see if the problem solves itself. If not then id say get you a wattering meter, which you can pick up for less than 5 bucks at your local hardware store. Good luck.

well i flushed it and it bounced straight back overnight! so i guess it was actually underwatering , i have been a bit carefull trying not to overwater lol.

I have a water meter but because of the type of soiless soil im using it doesn't read properly because the water is soaked into the medium and not trapped thus it can;t read the moisture. It looks brillliant this morning though.

The plant is pure power plant from nirvana. ill try get a pic of it this morning.

this is after it had a drink