Internal Protein Skimmers

What does a protein skimmer do? A protein skimmer is a saltwater aquarium filter that replicates the ocean’s natural filtration. Ocean waves produce foam that attracts organics, which are then deposited on shore. A protein skimmer creates foam in a chamber that attracts waste as it rises out of the water into a collection cup for removal. A protein skimmer is the central piece of a saltwater aquarium setup.

An internal skimmer sits inside the water. An in-sump protein skimmer, the most popular skimmer style, sits inside the aquarium sump under the main tank. An in-tank protein skimmer, like the Tunze 9004 skimmer, mounts inside the display tank. An internal protein skimmer has two main benefits: ease of setup and no leaks.

Looking for the best in sump protein skimmer for reef tank? Choose a cone skimmer with a bubble plate and a DC pump for power and control.
88 Results
Bubble Magus Curve 5 Protein Skimmer (In-Sump)
20%
off

Bubble Magus Curve 5 Protein Skimmer (In-Sump)

AquaMaxx FC-80 In-Sump Protein Skimmer
15%
off

AquaMaxx FC-80 In-Sump Protein Skimmer

NUVOSkim DC Protein Skimmer Desktop AUQA Gadget - Innovative Marine
10%
off

NUVOSkim DC Protein Skimmer Desktop AUQA Gadget - Innovative Marine

Reef Octopus Classic 110 Space Saver Protein Skimmer
20%
off

Reef Octopus Classic 110 Space Saver Protein Skimmer

Coralife BioCube Protein Skimmer v2 for Tanks up to 32 Gallons
15%
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Coralife BioCube Protein Skimmer v2 for Tanks up to 32 Gallons

Bubble Magus Curve 7 In Sump Needle Wheel Protein Skimmer w/ Bubble Plate
20%
off

Bubble Magus Curve 7 In Sump Needle Wheel Protein Skimmer w/ Bubble Plate

Red Sea Reefer RSK-300 Protein Skimmer
10%
off

Red Sea Reefer RSK-300 Protein Skimmer

AquaMaxx ConeS Q-3 In-Sump Protein Skimmer
15%
off

AquaMaxx ConeS Q-3 In-Sump Protein Skimmer

Bubble Magus Curve 5 Elite Protein Skimmer with Sicce SK-200
20%
off

Bubble Magus Curve 5 Elite Protein Skimmer with Sicce SK-200

AquaMaxx FC-120 In-Sump Protein Skimmer
15%
off

AquaMaxx FC-120 In-Sump Protein Skimmer

Reef Octopus Classic 150 INT Protein Skimmer
20%
off

Reef Octopus Classic 150 INT Protein Skimmer

NUVOSkim DC Protein Skimmer Midsize AUQA Gadget - Innovative Marine
10%
off

NUVOSkim DC Protein Skimmer Midsize AUQA Gadget - Innovative Marine

AquaMaxx ConeS Q-1 In-Sump Protein Skimmer
15%
off

AquaMaxx ConeS Q-1 In-Sump Protein Skimmer

AquaMaxx ConeS DCQ-2 Controllable In-Sump Protein Skimmer
15%
off

AquaMaxx ConeS DCQ-2 Controllable In-Sump Protein Skimmer

AquaMaxx FC-280 In-Sump Protein Skimmer
15%
off

AquaMaxx FC-280 In-Sump Protein Skimmer

AquaMaxx ConeS CO-1 In-Sump Protein Skimmer
15%
off

AquaMaxx ConeS CO-1 In-Sump Protein Skimmer

Red Sea Reefer RSK-600 Protein Skimmer
10%
off

Red Sea Reefer RSK-600 Protein Skimmer

IceCap K1-100 Protein Skimmer
10%
off

IceCap K1-100 Protein Skimmer

AquaMaxx ConeS DCQ-3 Controllable In-Sump Protein Skimmer
15%
off

AquaMaxx ConeS DCQ-3 Controllable In-Sump Protein Skimmer

Reef Octopus Classic 200 INT Protein Skimmer
20%
off

Reef Octopus Classic 200 INT Protein Skimmer

AquaMaxx FC-180 In-Sump Protein Skimmer
15%
off

AquaMaxx FC-180 In-Sump Protein Skimmer

AquaMaxx ConeS CO-2 In-Sump Protein Skimmer
15%
off

AquaMaxx ConeS CO-2 In-Sump Protein Skimmer

Bubble Magus Curve 7 Elite Protein Skimmer with Sicce PSK-600
20%
off

Bubble Magus Curve 7 Elite Protein Skimmer with Sicce PSK-600

IceCap K1-130 Protein Skimmer
10%
off

IceCap K1-130 Protein Skimmer

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