Next-Level Filtration

New Penguin® PRO and 
Emperor® PRO Power Filters.

Making an already strong-performing lineup even stronger.

Ultra-Quiet

Produces less than
40 decibels of sound.

The same level as a quiet room.

Customizable

Expect more
from your filter.

H.O.B. filtration to make your own.

The Excitement is building

Three years of consumer research helped us engineer two of our most advanced filters, continuing one amazing legacy.

Its improved impeller and motor assembly deliver best-in-class flow rates, while the upgraded spray bar design prevents clogging. The dual filter chamber features our exclusive BIO-Wheel® technology, 10% more biological surface area to ensure constant spinning. The submerged, self-priming motor and motor dampener make it one of the quietest filters available, producing less than 40 decibels of sound (about the same level as a quiet room).

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Adjust. Change. Fine-Tune. Tailor. Perfect.

Our new filters give hands-on hobbyists the ability to modify a range of features to suit their needs.

Take control of your filtration with these

Customizable features

Smartly redesigned, we built the Penguin® PRO and Emperor® PRO Power Filters for those who love to build. That’s why, before adding any improvements to enhance customization, we unpacked three years of consumer feedback to understand what users wanted (and didn’t want) in a filter. The result is a new line of hang-on-back filters that let seasoned aquarium keepers add their personal touch to advanced filtration.

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All Penguin® PRO and Emperor® PRO Power Filters deliver easy, three-stage mechanical, chemical and biological aquarium filtration.

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Penguin® PRO 125

For up to 20 GAL

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Penguin® PRO 175

For up to 30 GAL

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Penguin® PRO 275

For up to 50 GAL

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Penguin® PRO 375

For up to 75 GAL

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Emperor® PRO 450

For up to 90 GAL

BLACK DIAMOND® PREMIUM ACTIVATED CARBON IS JUST THE BEGINNING.

Choose from a variety of filter media options to keep your aquarium clean, clear and healthy.

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Developed specifically for the new Penguin® PRO and Emperor® PRO Power Filters, our expanded portfolio of filter media allows for customization typically found only in canister filtration. Now, carbon doesn’t have to fight ammonia, odors, free-floating algae, parasites and crud alone – it has an army.

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