Please help. Pics and Info included. nute burn or deficiency

Hey all, thanks in advance for the help. I started noticing the edges of some of leaves on some plants starting to turn yellow. ive checked the boards extensively and i cant figure out if its a nute burn or a nute deficiency. I read its real hard to nute burn with organic nutes and i used very little. some of the bottom leaves (1st set) are starting to yellow, with i am under the impression is a nitrogen deficiency. so i dont know if they need more nutes, or need less. other then that they look pretty healthy and theres lots of new growth every after i transplanted 2 days ago. i plan on watering tomorrow or the day after so i would love to know if i should add the nutes or not before i water. thanks again for any help.

Heres the info.


What type of medium; soil or hydro? SOIL
What brand and type of soil? not known. seems good. lava rock, sponge and all sorts of good stuff. also has little yellow nute balls.
Indoors or outdoors? Indoors
What strain? Trainwreck
How old are the plants? 14 days since sprouting
What type of lights and how many watts? HID. 400W HPS w/ cool tube
How far from the lights? 24 inchs
What is your watering frequency and source of water? tap left out to aerate. PH down to around 6.5
What, how much and when was it fed? NPK? used Bio-Grow (8-2-6; organic; used 1/4 prescribed dose
What is the medium/runoff pH and PPM if in hydro? not totally sure. have crappy prong checker but i dont trust it.
What are the temps and humidity in the room? around 80-82 w/ light 70-72 without
What size pots? not sure, not small tho.
Any bugs? Look real close. no bugs
Any other pertinent info? I think they're pretty healthy. a few were transplanted 2 days ago and it went well.

and the pics: it most visible in the last pic but you can see it in all of them.

bump....
come on people...please help...not one reply and almost 20 views...i know someone knows what this is....+rep to those who help a first-timer.

looks like overwatering just a little. stick your finger down in the soil n wait til bout the top inch is dry. try watering without added nutes for a while, since your soil has the slow release balls in it. usually wait bout 5 weeks or when the cotelydons start to fall off before you feed

oooooo n stick a fan on them bitches, keep the heat down some

again, oooooo, i say tis constantly, but looks like a lil more perlite mixed in the soil wouldn hurt, but i would wait til they pick back up before messn round wit the soil

hey thanks for the response....but does your response mean that its nute burn? im gonna hold off on the nutes tomorrow.

im pretty liberal with watering. once every 3-5 days. only when 1-2 inches deeps is dry.

the soil drains rather well. there is perlite and lava rock and other types of rock that are supposed to help with draining and aerating the soil. i am just trying to figure out whether they were asking for more nutes or telling me they've had too much. im gonna water with regular water tomorrow that ill get the ph to 6.5. i hope it doesnt get worse. i think i read that areas that are already yellow will stay yellow. is this correct or will they change back to green when they are healthier. thanks again.

the way yours looks, they will turn back green. n yes its beginning to burn... its the spots where they start turnin brown that wont heal. dont look like you went that overboard tho