Atlantic BB0500 Bio-Rocks, 0.5 cu.ft.MPN: BB0500
With all 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. Use 1 box of 0.5 cubic feet of Bio-Rocks per Media Bag.
- Expanded clay bio-rocks
- 25% less weight than lava rock
- Half the weight of gravel
- Same surface area as lava rock
- More stable and less abrasive than heavy-weight bio-media