Atlantic Water Gardens Bio-Rocks 20 pounds 0.5 cubic foot
- Model: BB0500
- Item: 73987
- Description: 0.5 cubic ft. Bio-Rock Media
- Warranty: 5 year
With all of the surface area but 25% less weight than lava rock and half the weight of gravel, expanded clay Bio-Rocks are the more stable, less abrasive alternative to heavyweight bio-media