Good to use for both fresh and saltwater aquariums. The ceramic material that the ceramic rings is made of is porous.
eBay
The ceramic material provides a large surface area for beneficial bacteria to grow, helping to remove toxic ammonia and nitrite and promote a healthy ecosystem in your tank.
eBay
1 lb little dry coral Premium Aquarium Activated & 1 Media Bag Reef Pond Canister.
eBay
They provide large amount of surface area in a small space where lots of beneficial bacteria can form on the surface. These bacteria can help convert and remove toxic waste like ammonia and nitrites in your tank.
eBay
75GPD NanoMax. Reverse Osmosis Fresh Water Filter System. Reverse Osmosis. Its small size allows you to mount. Carbon Aquarium. Clear carbon filter housing. Faucet and hose bib adapter. 1 Micron carbon block.
eBay
• Eliminates odors, discoloration and dissolved organic wastes from aquarium water. Each granulated carbon size may vary slightly due to the nature of the product. • 100% natural nut shell carbon will not raise phosphate levels.
eBay
Oceanic Aquarium Reef Reverse Osmosis Water Filter System This machine requires minimal space! Optimal water filtration for fish, coral, turtle aquarium's & other aquatic life, live rock, salt rock & plants.
eBay
Good to use for both fresh and saltwater aquariums. The ceramic material that the ceramic rings is made of is porous. Ceramic ring size: 1/2 "x 1/2 ", Contain: 6 lbs. Credit card or debit card. Size 6 lbs.
eBay