Penn-Plax Cascade Heat Aquarium Heater – 7.5” Length – 25 Watts
Penn-Plax Cascade Heat Aquarium Heater – 7.5” Length – 25 Watts
Hero image 0 of Penn-Plax Cascade Heat Aquarium Heater – 7.5” Length – 25 Watts, 0 of 6
Penn-Plax

Penn-Plax Cascade Heat Aquarium Heater – 7.5” Length – 25 Watts

Penn-Plax Cascade Heat Aquarium Heater – 7.5” Length – 25 WattsPenn Plax Cascade Heat Aquarium Heater 7 5 Length 25 WattsPenn Plax Cascade Glass Heater 13 5 Length 300 Watt for Aquarium and Fish TanksPenn Plax Aquarium Heater Fully Submersible 200 Watt Heats Up to 55 GallonPenn Plax Cascade Heat Aquarium Heater 11 Length 150 Watt GlassPenn Plax Cascade Heat Aquarium Heater 7 5 Length 50 Watt Glass

Key item features

  • FULLY SUBMERSIBLE AQUARIUM HEATER: The 25W Cascade Aquarium Heater easily maintains healthy water temperature within a 1° accuracy, and can be set anywhere between 68 ℉ and 89 ℉, by using the red control knob. The 25W model works great for fish tanks up to 5 gallons.
  • VISIBLE & ACCURATE TEMPERATURE SCALE: With an easy to read setting scale in both Celsius and Fahrenheit, it’s easy to see the temperature adjustments being made. To increase the temperature, rotate the control knob counter-clockwise, and to decrease, rotate it clockwise; or, follow the + and – symbols located near the control knob.
  • ORANGE PILOT LIGHT: Our Cascade Heat Aquarium Heaters feature a pilot light that indicates the heating cycle status. This means that it will go on and off by itself as the thermostat cycles the heating element on and off. In other words, orange light = heater is on. Similarly, these aquarium heaters make a faint click when turning off.
  • ADDITIONAL FEATURES: In addition to being composed of heavy-duty and shock-resistant glass, these fully submersible aquarium heaters can be placed either horizontally or vertically. There’s also a built-in minimum water level indicator at the top, colored in red.
  • MEASUREMENTS: Overall Length = 7.5” / Overall Diameter = 1.1” / Suction Cup Diameter = 1.25” / Wattage = 25W / Voltage = 110V

     
Price when purchased online
Not Available

How do you want your item?

How do you want your item?
Not available

About this item

Product details

Specifications

Directions

Warnings

Customer ratings & reviews

4.1 out of 5 stars
stars208 ratings104 reviews
How item rating is calculated
  1. 5 stars61% (127)
  2. 4 stars17% (35)
  3. 3 stars6% (13)
  4. 2 stars5% (11)
  5. 1 star11% (22)

Reviews summary

Pros

  • : Offers great value at this cost.
  • : Allows for precise temperature setting.
  • : Simple to operate with easy navigation.
  • : Made with high-quality materials.

Neutral

  • : Can be sufficient for small spaces, but may be insufficient for larger ones.

Cons

  • : Cups have difficulty adhering to surfaces.
Generated by AI

Customer photos

Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 104 reviews

Oct 22, 2025
mark
Item details
Size: 150 Watt - (20 - 30 Gal)
5 out of 5 stars review

Verified Purchase

Warms my fishes!

Keeps your fish from being fish sticks lol

Helpful?57IK9RLJW9AT19345535
Mar 10, 2020
edwardsissorhands
Walmart Associate
5 out of 5 stars review

Nice 30 gallon tank heater

Works fantastic, factory set temperature was perfect where it was set. alot cheaper than at pet stores.

Helpful?57IK9RLJW9AT19345535
Sep 19, 2025
WalmartCustomer
Item details
Size: 150 Watt - (20 - 30 Gal)
5 out of 5 stars review

Verified Purchase

Working great

Incentivized Review
Helpful?57IK9RLJW9AT19345535