i always use r/o water ph'd to 6.4. i ph the ferts to 6.4 when i mix them as well. i also add dolimite lime at 1 tbsp per gall of promix when mixing the soil. doing this, i never have any ph problems, lockouts, etc.
justaseed Reviewed by justaseed on . Ideal pH for Cannabis What pH water do you use, or what do you think is the best? Rating: 5