Hot Tub Compatible With Watkins Spas Filter Standpipe 76504
Watkins Spa Filter Standpipe for AG Plus, Hot Spring 76504. This newly designed standpipe (redesigned in Feb. 2012) is used to make a 1990-current Hot Spring spa "EverFresh" ready. This gray colored standpipe is modified to enable it to accommodate the Freshwater AG+ Sliver Ionizer. The AG+ Silver Ionizer cartridge is inserted into the top of the standpipe and is suspended within.