Water

Short answer: hard water raises the starting EC of your solution and pushes pH up. You can usually still use it, but you may need to add less nutrient, lower the pH more and check it more often. What makes water hard Hard water carries dissolved calcium and magnesium,...

Short answer: usually not. Most Kratky growers use ordinary tap water without problems. If you prefer to remove the disinfectant, how you do it depends on whether your utility uses chlorine or chloramine. Why tap water contains disinfectant Water utilities add...