Basil leaves have brown lesions then wither and die
I am growing basil in an indoor NFT system. I recently treated the plants using a product called Biota Max which is a pro-biotic containing various strains of Trichoderma and Bacillus. This is my first time using this product.
A couple weeks after treatment, my basil plants started exhibiting brown lesions on the leaves. The lesions would start at the top of the plant and work their way to lower leaves. I would remove the leaves but the lesions would appear on other leaves in the following days. This has begun to be an epidemic in my NFT system that is ultimately resulting in plant death.
Pictures of the lesions are posted in the following links. What could be causing the lesions?