Crystal Quest Dosing System Chlorine CQE-DS-06006Crystal Quest Dosing System CQE DS 06006 A Dosing System is needed if your water is harsh and requires additional help with difficult contaminants such as high or permanent hardness, high or low pH as well as addressing bacterial or metal concerns. Depending on the need, a specific solution is injected into the concentrate flow before it reaches the filtration system itself. The solutions we offer can prevent scale build up, pre filter foulant water,