5 COMPATIBLE WITH BIORB FILTER SERVICE KIT REFILL FOR BIO ORBS COARSE GRADE
Compatible with biorb service kit refills 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.