5 X COMPATIBLE WITH BIORB FILTER SERVICE KIT REFILLS ORB INC AN AIR STONE & PAD
Compatible with biorb service kit refill suitable for ALL Orb models old and new. FILTER FOAMS AIRSTONES COMPATIBLE WITH BIORB TANKS HIGHEST QUALITY AIR STONE. COMPATIBLE WITH BiORB ANTI ALGAE FILTER SERVICE KIT REFILL & CLEANING PAD.