4 Major Rules of Watering Rockwool

Always maintain a pH of approximately 5.8 in the nutrient solution.
Maintain a full-strength nutrient solution during every watering.
About 20 to 30% of the total solution applied during any given day should leach out the bottom of the rockwool. Flush the rockwool 100% with fresh nutrient solution, every two weeks.
Never drench rockwool with a fungicide or insecticide at 100% of the recommended label rate. Use only 15 to 20% of the recommended on the label. Contact us for further information.