Brown spots on top sugar leaves

[Shaded_One]

Seems like Biobizz assumes everyone uses tap water for their grows?

Calmag - Biobizz

www.biobizz.com

More from their website...

Is it necessary to regulate the pH when using the Biobizz products?​

In general, when using organic nutrients, pH adjusting is not necessary. This is because the Biobizz products tend to lower the pH naturally until it comes to the optimal range of 6.2-6.3.
However, in some cases the base pH of the tap water can be too high or the grower chooses to use RO water with a very low pH. In those cases, you can use Bio·Up and Bio·Down to regulate the pH of the mix before watering your plants.

Is it necessary to use a calcium/magnesium supplement when using the Biobizz products?​

Under normal conditions it is not necessary to use a Ca/Mg supplement if we use most or all Biobizz products. Only in some very demanding grows, like some cases of crops in coco coir, would it be necessary to use a Ca/Mg supplement, since it is a demanding and unconventional substrate.

 

[GNick55]

Makes it harder to trim and the brown tastes like shit. This is one case where I would recommend immediate wet trim. Anytime I had plants look like that was from bad roots.

yep overwatered
i see leaf septoria