Hiblow® HP Series Linear Diaphragm Air Pumps Model:HP-20 This lightweight ribbon-type material is

This lightweight ribbon-type material is commonly used in AquaFalls pond filters in place of lava rock

5" or 2" Union

Provides approximately 70 beneficial trace minerals

3-way splitter

Outlet assembly with pressure relief and pressure gauge

Hiblow® HP Series Linear Diaphragm Air Pumps Model:HP-20 This lightweight ribbon-type material isHiblow HP Series linear air pumps boast effective aeration and efficient operation. For over 30 years, these reliable, energy efficient, low noise pumps have been used in backyard ponds and aquaculture applications. Every HP Series air pump features thermal overload protection to guard against overheating and pump damage. Oil free operation eliminates danger of contamination in your pond! Linear diaphragm design for quick, inexpensive repair of worn