Keep Your Aquarium's Water Clean And Healthy With Top Fin Rf-S Small Retreat Filter Cartridges. These Cartridges Are Easily Replaceable, And Feature Coconut Shell Activated Carbon, Which Serves To Absorb Undesirable Odors, Pigments And Chlorine. Advice For Use: To Help Maintain A Healthy Aquarium, Change Filter Cartridge Every 3-4 Weeks, Or If Water Flow Becomes Obstructed.
Remove Cartridge When Medicating Water As Carbon Will Absorb Medications. Change Out 10% Of The Water Weekly Or 25% Monthly. Use A Water Conditioner (Sold Separately) Every Time You Add Fresh Tap Water To Your Aquarium.
Quantity
Goes well with this item. Each is the same price as on its own page.



