Koller Products TOM Aquarium Internal Power Filter (45 GPH Flow Rate), best price $15.99 new 2019

TOM Aquarium Mini Internal Filter combines silent filtration with user-friendly operation. Featuring an adjustable flow rate of 10 to 45 gallons per hour, perfect for handling your desktop filtration requirements. Includes two outflow return attachments, an integrated spray bar that creates an optimal flow of water and a direct flow diffuser for greater surface agitation. This compact, energy-saving filter operates on low-voltage power supply for safe aquatic use. Comes with filter cartridge packed with dense foam block and activated carbon for efficient removal of waste materials. Ideal for small fish tanks up to 10 gallons. TOM Mini Internal Filter uses TM1413 replacement filter cartridges.

• Internal power filter with adjustable flow rate (10 to 45 gallons per hour)
• Compact size fits easily in small aquariums, ideal for tanks 1-gallon to 10-gallons
• Silent, powerful filtration keeps tank crystal clear and fish healthy
• Mounts securely onto aquarium with strong suction cups