possible to tell issue?

ive been reading that this could be caused by over/under nutes but cant be over cuz i havent used any at all. could it be time to start adding some or maybe transplant?

Lift it out of the pot and check the root mass. Of they have reached the bottom and are now growing back up the outer edge then you certainly need to repot. When you do so, use some halth strength nutrient solution such as bio grow or similar after 24 hours. I would recommend using a product like rhizotonic which will break down any broken roots which may of been damaged during the transplant process. If you can, give them a little cannazyme which is a friendly bacteria to protect the root from diseases

eh yea the roots are growing back up..
was hoping i could hold off on transplanting til the lights i ordered come in, about 6-9 days lol, since right now pretty much just using the sun but that will be hard once i put in the pot i am planning on using. also hope this only issue that causing it since hasnt seemed to get any worse yet and rate of growth is still going alright.

Bro it's WAY easier than hiroshima made it sound. You can always get really crazy with all the chemicals and what not out there but it's not at all necessary except in rare situations.

It looks just fine. That brown spot is nothing other than an abnormality. Has nothing to do with nutes, water, nada. You're doing fine, just repot into bigger as soon as you can.

lol i mean to be honest the plant is in no harm at all.
yes its time to transplant but you have a healthy plant thats gonna do fine so no worries mate

just as update, seems fine now after transplanting, going on its 3rd 7 leaf set now.
internodes seem really short for how little light i actually got, since working on upping the amount, but seems be growing kinda slow but might just be me.

http://i43.tinypic.com/2eod6s3.jpg