In terms of value of efficiency the bubble magus mini q skimmer can not be beat ! All the features of a full sized protein skimmer in a small form factor.

Key Features Of This Nano Protein Skimmer

• Efficient pump that runs of UBS (world wide compatible)
• Works with all reef casa all in one aquarium models without any modification
• Compact Design
• Super quiet operation and air intank
• Bubble free outgoing water
• Easy to remove and clean  collection cup

Specifications:

• Aquarium Size: Up to 20 gallons
• Power Adapter Input: 100-240V, 50Hz
• Power Adapter Output: DC5V, 1A (USB interface)
• Pump Power Consumption: DC5V, 2W
• Mounting Bracket: Up to 1/2" thick glass
• Dimensions: 190 x 120 x 330mm (3.23″ x 2.09″ x 8.86″)

What's Included? 1x Bubble Magus MiniQ Nano Internal Protein Skimmer

The Tunze 9001 skimmer, world's most popular nano protein skimmer! Protein skimmers are useful parts of your filtration arsenal and help to remove pollutants, dead cells and excess organic waste from the water column.  This unique protein skimmer pulls water through a surface suction unlike any other skimmer. Its super quiet and efficient for its small size. Everything you need to operate comes right in the box and the magnet is which holds the protein skimmer in place is very strong. Key Features Of This Nano Protein Skimmer

• Compact Design
• Works with all reef casa all in one aquarium models without any modification
• Super quiet operation
• Made in Germany
• Bubble free outgoing water
• Easy to remove and clean  collection cup

Specifications:

• 5 to 30 US Gallon tank (Depending on tank load)
• Skimmer Cup volume: .2 Liters
• Air capacity: 26 GPH
• Magnet holder for up to 3/8" thick glass
• Immersion depth: approx. 135mm to 155mm (5.3 to 6.1in.)
• Power consumption: 2.5W, 230V/50Hz (115V/60Hz)
• Dimensions: L110 x W63 x H215mm (L4.3 x W2.5 x H8.5 in.)