85M4 Adjustable Flow Pump - 25 PSI 60 GPD 120 Volt - 1/4 Inch Standard Tubing sign-type_Dibond The Service-21 units mount securely

The Service-21 units mount securely to any trailer or 2 inch trailer hitch receiver for safe transport from pool-to-pool

It is the most affordable solution for cleaning spas

Repeat additions until a residual of 1

Simply attach the hose and start cleaning

heater control with energy saver program and Langelier Saturation Index for water balance

85M4 Adjustable Flow Pump - 25 PSI 60 GPD 120 Volt - 1/4 Inch Standard Tubing sign-type_Dibond The Service-21 units mount securelyThis Stenner chemical pump #85MJL4A1STAA provides reliable chemical feeding for your swimming pool. This adjustable flow pump is rated to pump 60 gallons of chemicals per day at 25 PSI. This stenner pump is a great choice for all your chemical needs.