JBJ Anaerobic Ball 1.5L(Medium)
Multiple hollow-pore balls connected to aid in quicker culturing of anaerobic bacteria.
Reduce algae growth and harmful substances in the tank.
Release K, Fe, Na, Ca, Mg, Zn, Cu and other minerals to benefit aquatic life.
Maintains natural balance of water.
Surface area: 850m2/L (3221 ft2/US gal).
Suitable for Fresh and Salt water.