Brown "Dead" Spots on leaves?

[deadkndys]

So I noticed today that two of my plants have brown "Dead" spots on a few leaves.

Soil Growers:
1. Are you growing from seed or clones? Seed

2. How old are your plants? 2-3 months.

3. How tall are your plants?
Ones a foot the other almost a foot.

4. What size containers are they planted in? One is square and is 6 and a half inches wide,8 inches long, and 8 inches high. The other one is round and is 10 inches wide and 6 inches tall.

5. What is your soil mix? Kellogs patio mix

6. How often do you water and what type of water do you use and how much you give per watering? once every 4 days and I water until the soil is saturated.

7. What is the pH of your water?7.0

8. What kind of fertilizer do you use and what is its NPK ratio?
3-1.5-4 Pure blend pro ( I haven't fed them for about a week and a half to two weeks due to getting nute burn on the lower leaves.)

9. Do you foliar feed or spray your plants with anything? No

10. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights") 150 watt hps

11. How close are your lights to the plants? 1- 1 and a half feet (one is taller then the other)

12. What size is your grow space in square feet? About 2-3

13. What is the temperature and humidity in your grow space? Usually stays around 85-88 in the later afternoon and night but during the day it stays at 90-92. Humidity is 30-40 percent.

14. What is the pH of the soil?7.0

15. Have you noticed any insect activity in your grow space?No

 

[al70]

not sure mate, here's a couple of pics might help
first one is manganese def.
second is potassium def.
hope ya get it sorted, goodluck.

 

[DETStrainKey]

Are you in veg or flowering.... if your in veg i would drop the ph down to about 5.8... and you might want to let the water aerate as much as possible.... adding a humic/folic acid will help transport nutrients.... also make sure you are mixing nutrients very well..... sometimes i mix up things in a separate bucket before adding to my rez.

Also you want to get the temp down don't go over 85 degrees...

You can help your plants if you folir feed with LIGHTS OFF. Add wetting agent to make mixture go internal.

Hope i was able to help.... KEEP IT BURNIN