leaves problem

hey,
All the lower leaves of my plants are a bit yellow and the end of the leave is dying, can someone tell me what the cause of this could be ?
I use 2 20watt 1150 lumen 6500K CFL and 1 24watt 1445lumen 2700K CFL
with an emergency blanket as reflective material.
The temprature is always around 29°C = 84F
I don't use any special soil, i water my plant once every 2 days with a Nutrients mix and spray them once a day.

Looks like nutrient burn to me. Those plants would benefit from less nutrients and closer lights as they are all stretched out.

Little Tommy said:

Looks like nutrient burn to me. Those plants would benefit from less nutrients and closer lights as they are all stretched out.

Click to expand...

thx man! i did put to much nutrient in the water by accident but i didn't think it would make a problem.
and i've bought some lights a week ago, before that they were standing at the window.
Is it a good idea to use NO nutrients for this week ?

I would flush with PHed water only for at least a week.