The Aquatop SP913UV-RCI Replacement Cartridge Insert – 2 Pack is designed to refresh your SP9-UV and SP13-UV submersible UV filters. Each cartridge combines a strong poly-fiber layer to trap organic debris with premium activated carbon for chemical filtration. Together, they offer mechanical, chemical and biological filtration to help keep your aquarium water crisp, clear and odor-free. Aquatop recommends replacing the insert every 4-6 weeks, or sooner for tanks with heavier livestock.

Compatible With:

• SP9-UV Submersible UV Filter

• SP13-UV Submersible UV Filter

Why You’ll Love It:

• Original replacement cartridges designed for the SP9-UV and SP13-UV

• Two-pack of inserts, each loaded for easy maintenance

• Mechanical + chemical + biological filtration in one step

• Helps reduce odors, cloudiness and dissolved organics

• Quick & easy drop-in installation

• Suitable for freshwater and saltwater aquariums

💬 Shopify Blurb (Short Intro)

The Aquatop SP913UV-RCI Replacement Cartridge Insert – 2 Pack keeps your SP9-UV or SP13-UV filter performing at its best with combined mechanical and chemical filtration.