What does Zone do? Morgan December 12, 2016 01:55 Follow Zone maintains optimal root zone conditions for maximum nutrient uptake by reducing pathogen populations guaranteeing clean white, healthy roots! Related articles How do I use Zone? Which nutrient should I use Saturator with? How do I use Sila-Guard? Which product replaces Liquid Light as a foliar spray? Can I switch to the Commercial Edition mid-cycle? Comments 0 comments Please sign in to leave a comment.