Mottled brown patches on leaves

[NoFksNate]

Hi guys,

I think this is a nutrient deficiency, lower leaves getting mottled brown patches and starting to die during flowering?? Any advice is appreciated.

Thanks,

[CaptainWiese91]

What is the Ph ?
soil? Coco ?

looks like phosphorus deficiency..

[NoFksNate]

What is the Ph ?
soil? Coco ?

looks like phosphorus deficiency..

Thanks, its my first time, I'll buy PH meter, the soil is just regular garden soil from a shop with some fertiliser added. I'm not sure what coco is =(.

Thanks =)

[CaptainWiese91]

So you are growing in soil.
If you don’t know what the Ph is, then I would suggest that first.
Have you been reading about the Ph in soil etc.? On the main site ? Or else I would also suggest that..

coco is another medium, not relevant here.

I been using tomato soil all my years of growing for a bag of 50Litre for 5$. So it can easily be done without a “cannabis” soil bought from cannabis companies.

[NoFksNate]

Thank you. I have read about PH, will hopefully be able to manage this problem from now on. Thanks again =)

[NoFksNate]

Hi, so the PH is 7, does this explain the phosphorous deficiency?? Thanks

[CaptainWiese91]

It could maybe. It’s in the high area of the PH range.
When you water try give it around 6,3-6,5. Nutrients are absorbed in different ranges between 6,2-7,0

[NoFksNate]

Thank you, I used sulphur on the soil, calculated the volume to reduce pH by 0.5. Hopefully this works. I'll have to learn how to reduce PH with watering.

Appreciate the help.

[CaptainWiese91]

Measure the Ph in the water. If you want to lower it I use citric acid from organic lemons. Been doing that since the start of my growing.

[NoFksNate]

Thanks, I'll have buy a proper meter, at the moment I just bought this little test kit (indicator + white powder).

[CaptainWiese91]

You need a digital mate