Tell me what you think (pics)

Just looked at my girls thats about 2.5 weeks into flowering and Im freaking out.

The leaves look like theyre burnt or something but my cfls are 3 inches away from my tops. I just installed a portable A/C and now the temps are 76f at the bottom of my plant and 80 at the top. RH is at 40% Before installing the A/c the temps were 80-86, again that was before and they were doing fine.

Im running 362 watts of mixed cfls right now. PPM is 1300 or so using the Lucas Formula with GH micro and bloom. My res temps are 71 and I have a shitload of bubbles due to my new air pump.

PH is at 5.7


Everything seems ok to me. What do you guys think? Im not sure, I might have hit the top with a light but dont think I did.

Heres a few more. One is of some really small spots on the leaves. I think that was due to a huge jump in ppms though that happened a week ago because my res level got really low and bounced the ppms to 1890 yikes.

your starting to get nute burn at the tips,and it does look like a bulb burned a plant.i think some plants use nutes slower and slower yet under cfl,s.i feed only a 1000ppm under hps.of advances micro,bloom, grow.

trapper said:

your starting to get nute burn at the tips,and it does look like a bulb burned a plant.i think some plants use nutes slower and slower yet under cfl,s.i feed only a 1000ppm under hps.of advances micro,bloom, grow.

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if the ppm rises as the res drops.. that means you have too much nutrient in the water. it should be stable the whole time. i would lower the ppm a bit maybe to where you raised it from or a little higher.. but its obviously too high at whatever you have it now.

i think its because of heat followed by nute problems

Nute burn, and as was said earlier, if your ppm is rising while your water level drops you're too strong on the nutes. Hence the burnage. Back them down.