If you use RO or distilled water you NEED CalMag Plus

[SAP420]

I have been using soft water for a long time not using Sodium Chloride but Potassium Chloride to get the hardness out and have not had any problems at all growing.

SAP420 Reviewed by SAP420 on 07-23-2008. If you use RO or distilled water you NEED CalMag Plus That's all. My fingers were cramping from typing it n times a day. Rating: 5