Brown spots on leafs, what could it be?

[mordagan]

Sorry if i asked again about what is this, am new here

 

[MilkyTrichomes]

Look at the underside of the leaves. That looks like bug damage to me.

 

[Pushrod Monkey]

Possibly leaf septoria

 

[OTCusp]

What stage of growth are you in? Make sure you eliminate pest possibilities. Always treat with cal mag. And depending upon stage of growth, silica.

 

[mordagan]

What stage of growth are you in? Make sure you eliminate pest possibilities. Always treat with cal mag. And depending upon stage of growth, silica.

Okay so, day 35 blackberry auto. I feed with 1 ml of biobizz products ( biobloom,biogrow,calmag(0.5),top max, biobeaven, algae mix).

 

[OTCusp]

How big is the pot?

 

[mordagan]

How big is the pot?

Thanks for taking time to help, its 11L

 

[OTCusp]

Sure. I use 5 gallon smart pot. I go by th the feel of the bag, if it's lite, I water. Typically 2 gallons of water is perfect for a watering. Just find a happy sweet spot with her. And whatever your numbers call for nutrition wise per gallon, cut it in half. So 2 gallon, give it normal numbers.