Description
The CNZ 1.5-Inch Bio-Balls with Sponge Core (200-Pack) offers engineered spherical surface area and internal biochemical foam cores to optimize water circulation, debris interception, and gas exchange in wet/dry, sump, and pond filters.
High Surface Area Design for Wet/Dry & Sump Filtration
Optimize water filtration performance across your aquatic setups. The CNZ 1.5-Inch Bio-Balls with Sponge Media combine an outer plastic matrix with an inner open-cell foam core. This dual-layer structure increases total available surface area while breaking up falling water streams to promote gas exchange in wet/dry trickle towers, sumps, and waterfall filter boxes.
Resists Compaction for Continuous Water Circulation
Unlike traditional flat or granular filter media that compact over time and create restricted water bypass channels, these 1.5-inch spherical bio-balls allow continuous, uninterrupted water flow. Their lightweight construction makes them suitable for submerged or drip-tray applications across koi ponds, marine reef sumps, and commercial fish breeding racks.
- DUAL-ACTION DENSE SPONGE CORE: Each 1.5-inch bio ball is packed with a porous inner sponge insert that dramatically increases overall biological surface area while capturing fine debris for dual mechanical and biological filtration.
- OPTIMIZED HIGH-SURFACE-AREA DESIGN: Engineered with an open ribbed structure and internal sponge insert to maximize usable surface area while promoting consistent water flow throughout your filtration system. The durable design supports efficient filtration performance and helps maintain smooth water circulation in freshwater and saltwater aquariums.
- HIGH-VOLUME 200-COUNT PACK: Provides exceptional coverage for large filtration systems. Perfect for filling bio-reactors, sump chambers, large canister filters, pond waterfalls, and trickle filter towers.
- CLOG-RESISTANT & DURABLE: Constructed from high-density, non-toxic polypropylene plastic that won't degrade, warp, or leach chemicals over time. The geometric design ensures optimal water and oxygen flow without clumping or clogging.
- Package Dimensions: Approximately 15 inches x 10 inches x 4 inches when flat
- SAFE FOR ALL AQUATIC ENVIRONMENTS: 100% safe for freshwater, saltwater marine reefs, koi ponds, and turtle habitats. Easy to rinse and reusable for years of continuous biological filtration.


