RTC Products SPM Medium Hydro Sponge, 6 x 4 x 2 in.

Hydro-Sponge Pro V Premium Reticulated Foam Sponge Filter for Aquariums up to 125 Gallons : Pet Supplies

COMBO SCOURING PAD/SPONGE, 8/6 – AmerCareRoyal

HYDRAMEM 8040 SWE-400 Seawater Membrane

RTC Hydra Sponges, Giant Sponge, Large Sponge

Dharwad SOR PDF, PDF, Construction Aggregate

RTC Products SPM Medium Hydro Sponge, 6 x 4 x 2 in.

Sponge Filters

RTC Block Microfiber Pro Sponge (6 Pack) : : Tools & Home

RTC High Roller Grout Wash Bucket : Tools & Home Improvement

The Hydro-Sponge Pro filter employs premium reticulated foam to deliver high flow rates, whisper-quiet operation, and even cleaner water for freshwater and saltwater fish without cartridge replacements or an impeller Quiet and easy to clean - simply rinse and squeeze in used tank water (not tap water!) to maintain nitrogen-fixing capability. Inner canister of filter can be filled with activated charcoal, carbon, or other media.

Hydro-Sponge Pro IV Premium Reticulated Foam Sponge Filter for Aquariums Up to 80 Gallons