overwatering or nutrient deffiecency?

http://i750.photobucket.com/albums/xx149/hawkd68/IMG00039-20110614-1604.jpg

http://i750.photobucket.com/albums/xx149/hawkd68/IMG00038-20110614-1604.jpg

and this http://i750.photobucket.com/albums/xx149/hawkd68/IMG00041-20110614-1605.jpg is my setup i cut of the tips because the tips were turning white after putting them it outside for a few hours aday;then it spread and turned brown and yellow

well am inclined to say nutes, and i can't see real well but are the tips purplish or redish cuz that would indicate potassium deff but, but i think if you want help you need to let us know how many times you water and what soil that is

sorry about that... i water every 3 days havent gave it any nutes just regualar pre fertilized potting soil.and its like a light brown starting from the tips of the leaves spreading.also,ive been adding superthrive midway into the grow.

What brand of soil, though, NPK ratio, slow-release ferts (like the little yellow balls in MG soil)?

well looks like your soil is way to hot i would suggest transplanting into something without any releasig nutes every time you water your releasing ferts

its some potting soil from osh no npk ratio in sight all it says is its pre-fertilized.im kinda short on cash so any cheap soil suggestions for a smooth transplant?

Over watered, stressed from playing with the light cycle etc etc. These are seedlings, they need routine, precise routines. It might take a seedling that size in a pot that size, about a week before it needs watering again.

The baby roots are stressed and are not spreading out through the soil. My guess is that they have headed straight to the bottom of the pot and thats about it, they be drowing at the bottom in the moisture.

Your best remedy is to leave them under a constant light cycle of 18 hours on and 6 hours off and give them time to heal from the constant shocks and time to grow some roots. From roots you get the nice growth spurt we all look forward to in our plants.

thanks i have been playing with the light cycle too much switching from 24/0 to 18/6 also i bought a new thermometer says its in the mid 90s.o so many problems :/im not gonna stress it to much but my plants are probly going to