necrotic spots

Howdy all,
I have some lil girls that have some weird blotches on them and the tips of her leaves seem to be dryin up.

They are about 8 weeks old, under cfl and outside 16hr light. In foxfarms soil,(perlite lil pete moss lil dolemite lime also) only one shot of nutes, which was 1/2 strength(big grow) one month ago. PH is at 7( Im working on getting it down a few points) I gave them a spray of neems oil 2 weeks ago then few days after put some Take down garden spray(pyrethrins/canola oil) and then a few days later the spot started to develop. I waited a few days, sprayed a few times with just water...and it still gets worse. I tried to cut off the spots, and would find them one another part the next few days.. any Ideas

if you spray your plants with ferts/nutes and have your lights too close to your plants it will produce the burn spots you observe there. move your lights away..

cylee89 said:

if you spray your plants with ferts/nutes and have your lights too close to your plants it will produce the burn spots you observe there. move your lights away..

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Hi thx for responding,

Well the few times I did spray them was right before the dark cycle. Besides they still get worse when I dont spray...it seems like its something else to me.

Hmm anything else?

Discgolferman said:

Hmm anything else?

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*bump*

ill bet she's hungry if you havent been feeding her for a month.

You should only be spraying neem oil if you have a problem that needs to be treated with neem oil... it is a bio-pesticide! Did you say you had them outside for 16 hours & cfl?

grrower said:

ill bet she's hungry if you havent been feeding her for a month.

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I was wondering that myself....I waited cause they have been transplanted(1gallon-3 gallon) into foxfarms soil 3-4 weeks ago so I didnt want to over do it but next watering(2-3days) Im going to give them a shot of big grow.

Thx DGM

speeka said:

You should only be spraying neem oil if you have a problem that needs to be treated with neem oil... it is a bio-pesticide! Did you say you had them outside for 16 hours & cfl?

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Yap I had some aphids show up so I gave them a splash. I didnt use much, the recommended amount and just 1 time before they went to sleep.

I started them in feb, under cfls 16 hr light then as the sun started to shine(march) I would take them out in the morning then at 5pm it would get dark and I finish off the lightcycle(3-4 hrs) with cfls....then do it again the next morn...and so on. Im hoping to plant them in a month outside.

Thx
DGM