Waste-Away Gel Marine Single Pack - Medium (50-150L)

"Size: Medium - 50 To 150 L Waste-Away Gel Is An Organic Waste Destroyer : 100% Natural Aquarium ""Cleaner"". The Gels Are Full Of Cleansing Bacteria That Are Automatically And Continuously Released Into Your Aquarium To Consume Nutrients And Break Down Fish Waste; Keeping Your Tank Clean And Water Clear."