I've finally decided to have a go at a proper indoor grow. In the past i've done some somewhat successful outdoor grows with little problem. My new grow is experiencing what i believe is nute burn but i'm not sure.

Soil is a potting mix called Garden Galore Vegetable and Herb Mix. Says its high in nitrogen with slow release.
I'm thinking i made the wrong choice on medium but would like some advice?

Soil is a potting mix called Garden Galore Vegetable and Herb Mix. Says its high in nitrogen with slow release.
I'm thinking i made the wrong choice on medium but would like some advice?