Black spots on leaves? Need help.

Hey everyone!

I am growing a few plants outdoors, and one of them is showing some black spots on their leaves. They are also curling up a little bit on the tips. Here are some pics:

http://imgur.com/a/erbkr#0

Strain: Blue Dream
Clone Transplant Date Started: 6/9
Black Spots Start Date: About 7/25
Goal PH: 6.5
Fertilizer's and Additives:
- All Emerald Triangle, "Humboldt County's Own" fertilizers and additives - http://emeraldtriangle.biz/feeding-schedule
- Small amounts of Cal-Mag, Advanced Nutrient Flowering Additives (Big Bud, Bud Candy, B-52)
History:
7/21: Sprayed "Monterey Garden Insect Spray" on plants
7/21 (+-2 days): Noticed Black Spots
7/22: Fertilized with "Bloom Week 1" nutrients
7/23: Sprayed with "Monterey Take Down Garden" Spray & "Safer Insect Killing Soap"
7/24: Water
7/25: Let dry
7/26: Fertilized with "Bloom Week 1" nutrients
7/27: Let dry; Pictures Taken

Do you think it was because of the insecticides? Or is this a nutrient?

Thanks!!

Oops I meant that the leaves turned black around 7/21

Looks like an infection, bacterial or fungal.
Also just a little info needed: indoor or outdoor grow? Looks like outdoor...
Just my opinion.