AquaClear 20 Ammonia bag – Freshwater only. Used to remove and help the control of ammonia in a freshwater aquarium. Ideal for new aquariums or to help in heavily populated aquariums.

Sizing:

• Size 20: 5-20 gallon aquariums
• Size 30: 10-30 gallon aquariums
• Size 50: 20-50 gallon aquariums
• Size 70: 40-70 gallon aquariums
• Size 110: 60-110 gallon aquariums