HELP plant in need!!!!

Well heres he story. my leaves we getting a little yellow towards the bottom about 1 month in to the grow. so i decided it was a well established shrub so i went ahead and put a 15-8-8 1 cup of a local nursery nutes around the shrubs and i woke up and shit was wacked. I have a total of 15 plants all the same age and I tryed this shit on only one. Any ideas on how to fix this problem. Yellow leaves bottom only usely on lower established leaves and on some botton baby leaves.

Describe "wacked". I would imagine you overfed them and it's freaking. Flush it out with some plain water, and after it recovers start feeding again, but at lower strength to make sure you don't torch it again.

thank you. As for Wacked my plant was about 3 feet all the leaves turned yellow and browish and made me wanna puke. Nute burn? I just got done flushing it out with water. and its looking better then it did early today. my ph of my water is 7.0 and have been watering every 6 hours with 75 watt halogen bulbs on it 24/7. i did have a mite problem a few weeks earlyer but i took care of it with some non-harmful spray. could it be the nutes reacting to the spray weeks earlyer?

yellow/brownish, especially at tips, is sure sign of nute burn. halogens are not good for growing, for efficiency/heat reasons.

sounds like a you dont have enough nitrogen, air circulation, and co2 try flushing it out add the nutes after soil dries and add some CO2 are you using any...

and turn your fan OFF when adding the co2 (this helps the plants really absorb the CO2)

this will make your plants perk up and look beautiful!!
and give you FAT DANK STICKY STANKY GREAT LOOKING BUDS!!!!!!!

pics would help.