When running a hydroponic growroom or greenhouse, good management of your nutrient solution and general growroom hygiene should be high on your list of priorities.
By keeping your growing environment clean and tidy and free of biomass, many diseases need never become a problem. Keep a regular check on the pH, EC and oxygen levels of your nutrient solution, any fluctuation off the correct levels can mean poor plant growth and should be readjusted before it becomes a serious problem. Regular checking of your nutrient solutions won't take long and can save a lot of damage in the long run.
It's simple really...
Use the Essentials range of professional growroom products to provide your plants with better growing conditions and they will reward you with faster growth and more yield.