Highly concentrated formula. For root zone application, mix 0.3 grams of Tarantula per liter of nutrient solution. For accelerated growth, use 0.6 grams per liter and apply weekly during the vegetative cycle and during the first and second weeks of the flowering cycle. If you want to apply Tarantula as a foliar spray, mix 1.0-2.0 grams per liter of water. When using Tarantula, be sure to steep it in water that is either at room temperature or slightly colder, never in hot water.