Browning on tips / edges of plant!! Looking for some advice

**Leon727272** · 17-02-21, 12:49 AM

Click image for larger version.

Name: 1.jpg
Views: 42
Size: 164.5 KB
ID: 395443

I am a relatively new grower and I am looking for some advice on what is causing this issue of browning at the tips & edges of the leaves.......see attached pic.

Here is what I am growing etc........

Strain: Girl Scout Cookies
Medium: Coco Coir
Nutrients: Advanced Nutrients (using at 75% of the recommended nutrient schedule)
Lights: Optic Slim 600H
Indoor grow tent 4ft x 4ft
Currently in week 6 of Flowering
Current EC.... 2.0-2.0
pH range 5.6-5.9

Any direction would be much appreciated

**IceCalibur** · 17-02-21, 01:02 AM

Hi Leon, just looking at the image you shared, it looks to me like a potassium deficiency

Whether this is caused by a lockout or it's just that the plant is lacking in potassium, I can't really say..I have no experience with Advanced Nutrients.

Can you provide more pictures of the plant for us?

**GEORGE** · 17-02-21, 01:23 PM

Welcome to the talk Leon, enjoy dude.

**Bud Lightyear** · 17-02-21, 01:38 PM

Nute burn...Your Ec is way too high @ 2.0...Give plain pH adjusted water for 2 days then reduce the Ec to 1.2

Regards BL

**Leon727272** · 17-02-21, 02:29 PM

Click image for larger version.

Name: GSC Pic 1.jpg
Views: 14
Size: 20.9 KB
ID: 395460

Something does not add up with this EC situation. Your comment about nutrient burn does not surprise me at all. However....... when I mix up the Advanced Nutrients blend (exactly as per the AN official feed chart that is on their website), I get an EC of 2.4-2.6 , hence why I went to 75% of the nuts. I would think that, in order to get an EC to 1.2, I would have to use a maximum of 50% of the Advanced nutrients...........so this does not make any sense to me.

Also, there are many EC charts for cannabis available and any of them that I have reviewed are similar or identical to the one I have attached from Royal Queen Seeds, which recommends EC levels of around 2.0 during flower.

To be honest, I have 4 more weeks of flowering before harvest and I will review the end result........but I am seriously considering moving away from Advanced Nutrients and going to an organic supersoil grow medium with an automated water system like Blumat.

Click image for larger version.

Name: EC Table Royal Queen Seeds Website.jpg
Views: 16
Size: 22.2 KB
ID: 395461

**Cannabug** · 17-02-21, 02:36 PM

Welcome to the forum leon
You'll find most on here dont use the recommended dose of nutes mate. Use more spend more is a win win for the product owners imo