Advanced Nutrients - Piranha 250 MLIn Store Location: B9 When you introduce the powerful beneficial fungi in Piranha to your root zone, youll experience many amazing benefits. First, the fungi will help expand the effective surface area of your plant roots and their cumulative length by up to 75%. Scientific tests have shown this can help your crops obtain as much as 86% more nitrogen, 234% more phosphorous, and 75% more potassium than growing without these fungi. Try Piranha, and