Sump Tank, Koi Pond, Top Filters, Canister Filter, 20 Pcs Big Aquarium Bio Media Blocks 6.3 Inches, Ceramic Fish Tank Bio Media with Dense Tiny Holes

Color: yellow Material: ceramic Size: 6.3 x 1.4 x 1.4 inches (L x W x H) Package Includes: 20 x bio media block Note: - Please refer to the measurement. Tiny measuring error is allowable in normal range. - There might be a little color difference due to the monitor, camera or other factors, please refer to the physical item.

• Dual stage cleaning: media provides physical filtration, absorbing dirt, impurities, floating particles; bio-filtration eliminates foul odor and unhealthy substances; returns crystalline clarity to your tank's water
• Effective cleaning, speedy growth: each 6.3 x 1.4 x 1.4 in block includes a hollow design with densely spread tiny holes; allows robust absorption to filter particles and detritus; grants expansive area where good microorganisms can thrive; encourages a nitrification setup to dissolve pollutants
• Durable and strong: created from a ceramic baked at a hot 1200℃/2192℉; these blocks are rugged, resisting breakdown; delivering water purification over the years
• Volume pack: inside, twenty sizable biological media blocks at 6.3’’ length and 0.6’’ hole diameter; volume suitable for your swaps and use; in ponds, sumps, planted tanks, and freshwater aquariums
• Widely used: this bio media suits various filtering configurations; whether pond filters, top filters, bottom filters, canister filters, or custom grooved filters, this media addresses your needs