The AquaClear Zeo-Carb Filter Insert for 50-gallon tanks is a powerful replacement filter that merges the effectiveness of activated carbon with an ammonia-eliminating resin to ensure a pristine freshwater aquarium. This insert chemically binds with ammonia to extract it from the water, safeguarding your aquatic environment. Its high-quality, research-grade carbon offers an expansive surface area to trap impurities, eliminate odors, and prevent water discoloration, resulting in crystal-clear water. As a versatile chemical filtration option, the AquaClear Zeo-Carb Insert delivers dual benefits by purifying water and tackling harmful ammonia and nitrate levels. This creates a healthier, less stressful habitat for your fish, while supporting beneficial bacteria. Ideal for both new setups and densely populated tanks, it is exclusively designed for freshwater use.

• Integrates activated carbon and ammonia remover to clear toxic ammonia, nitrite, odors, and water impurities.
• Effectively purifies water by removing ammonia, nitrite, discoloration, and unwanted smells.
• Specifically crafted for freshwater tanks, perfect for newly established or crowded aquariums.
• Minimizes fish stress and preserves beneficial bacteria for a balanced ecosystem.