Cascade Internal Filter

by Cascade

$60.99 (You Save 44%)
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In Stock

Key Features

  • Efficient chemical and biological aquarium filtration
  • Removes harmful toxins, odors, discoloration and more
  • Spray bar provides essential aeration for healthier environment
  • Fully sumbersible filter quietly delivers 45-175 gallons per hour of crystal clear water for your fresh or marine aquarium up to 50 gallons in size depending on model number.
  • Spray bar option allows you to distribute water evenly helping aerate your tank.
  • Can be placed horizontally and is easily hidden.


Cascade Internal Filter Cascade 400 - Up to 20 Gallons (110 GPH)

The Penn-Plax Cascade Internal Filter by Penn Plax is designed for better filtration and aeration above and below the surface! The spray bar distributes water evenly over the water's surface to aid in aeration for healthier, cleaner aquarium water.

The Cascade Internal Filter provides crystal clear water for freshwater and marine aquariums, and is great for aquatic terrariums too. Activated carbon cartridge media is included for efficient chemical filtration of harmful chemicals, toxins, odors, discoloration and other contaminants. The carbon cartridge is easy to replace for simple maintenance. The internal sponge optimizes colonization of beneficial aerobic bacteria, which remove ammonia and nitrates for safe, healthy water. A large capacity internal filter cup lets you choose your own filter medium as well.

The pump head features adjustable and directional water flow. An included elbow fitting easily attaches the spray bar to the pump for even water return distribution. The filter may be placed vertically or horizontally. UL-listed for safety.


Cascade 300: 70 GPH (Up to 10 Gallons)

Cascade 400: 110 GPH (Up to 20 Gallons)

Cascade 600: 175 GPH (Up to 50 Gallons)

Warranty: 3 years.


Brand Cascade
UPC 030172024320
Item Number L1619490927P16194
Size Cascade 400 - Up to 20 Gallons (110 GPH)
Weight 1.35 lbs.
Pkg Dimensions 8" (L) x 7" (W) x 1.5" (H)

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Reviewed by Martha B. on May 25, 2021


Reviewed by Doug L. on Dec 1, 2020

Penn plax filter

Reviewed by Gwen B. on Nov 30, 2020

Great Filter Choice for One Turtle Tank.

Reviewed by William E. on Nov 22, 2020

Excellent filter for turtle aquarium.

Reviewed by Michelle M. on Oct 27, 2020

Good Bang for Buck

Reviewed by Elizabeth a. on Oct 25, 2020

Good for smaller tanks

Reviewed by Jeanna B. on Sep 21, 2020

If you need help opening the filter....

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