Hydrootto

Plants starting to burn alot around the bottom bay area no nukes used but I believe the problem is that the soil is a reused from another run that is three soil mix and can be too hot for the plants week 4 veg any idea that I can do to stop the damage from going further

Hi I was wondering on second grow can I do a three soil mix fox fram happy fog,fox farm strawberry and fox farm ocean forest together and what stage will I need to add nutrients in