Grey Porous Ceramic Bar

100% brand new and high quality

Features:

• Suitable for freshwater and saltwater aquariums.
• Easily detached bio-membrane improves metabolism of beneficial bacteria.
• Recyclable for plant soil use.
• Decrease the frequency of fish tank water changing.
• Fired by high temperature so as to encourage the growth of nitrifying bacteria.
• Anti corrosion and provide water of the premium quality for your fish tank.

Each block measures 6.1″ long, 1.6″ diameter,

approx 90 -100 grams. crack into pieces to any size needed,

great for used in freshwater aquariums, planted aquariums, sumps and ponds.