Magnesium Deficiency or Heat Stress

[TexasFarmer]

Day 21 and some leaves are curling upwards and there is a few rusty spots. I am trying to determine what is the culprit. The top leaves are a little dark and the tips are starting to yellow so I have flushed twice with PH 5.8 water with 1 teaspoon of Epsom salt. Everything seems to be going pretty good I just want to fix the problem before it gets out of hand.[/ATTACH][/ATTACH][/ATTACH][/ATTACH]

Indoor Grow
Strain: Skunk #1 Auto Fem from Sensi Seeds
Medium: Botanicare Cocogro
Nutes: Advanced Nutrients PH Perfect Micro-Grow-Bloom 1/2 strength
RO Water
PH 5.9
Run off PH 6.3
Light: Hydrofarm 150watt HPS with 4" exhaust fan
2 10" high out put fan
Temperature: 79 night to 82 day
Light Schedule : 20/4

 

[smith4924]

Imo I think they may just be a little to warm but other then that they look great. I don't think you have much to worry about man if you have mag. deff. the veins will be green with yellowing leaves and calcium will cause rusty spots with burnt looking serrated edges. Hope this helps but im sure other with jump in also.... good luck

 

[mallo]

She looks great to me. I've had the leaf edges get a little curly like that and the plant grew fine. Someone else may be able to spot a minor def. but it may also just be the way she grows. Sending you a little :karma Cloud: to ease the stress!

 

[GoAuto6]

might try bumping up your grow regimen..... looks a little N deficient.

If you're certain it's a N deficiency you can do a foliar spray of 1 part household ammonia to 10 parts water. Do this once a day for 2 days, wait a couple days to see if it's effective, and mist them again if needed. Make sure to mist the underside of the leaves as well.

 

[TexasFarmer]

Great thanks for the help. This is my first grow and I have a lot to learn.