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Penn Plax Cascade Preset SubmersibleAquarium Heater, 300-Watt

3.6 out of 5 stars 36 customer reviews

Price: $11.18 & FREE Shipping on orders over $49. Details
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  • Accurately maintains the desired temperature in your tank
  • Fully submersible and can be placed horizontally or vertically in your tank
  • Easy to set and accurate to 1° Fahrenheit
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$11.18 & FREE Shipping on orders over $49. Details In Stock. Sold by Monster Pets and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

  • Penn Plax Cascade Preset SubmersibleAquarium Heater, 300-Watt
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  • Leegoal Digital Aquarium Terrarium Fish Tank Thermometer(Black)
Total price: $13.70
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Product Description

Penn-Plax Cascade Heat Aquarium Heaters accurately maintain the desired temperature in your tank. Available in sizes to match the size and volume of your tank, these heaters are factory preset to 76 degrees Fahrenheit making them ready to use in most aquatic environments. Can be set to your desired temperature using the visible temperature setting scale and is accurate to 1 degree Fahrenheit. Just plug it in and these heaters will safely and efficiently bring the temperature to your set level. Fully submersible, these heaters can be placed horizontally or vertically in your tank and will automatically maintain the desired temperature level. Made with superior insulation, these heaters provide excellent heat distribution over the entire element. The heavy duty shock-resistant glass gives these heaters a long life and makes them safe for your aquarium and your pets. Each heater comes with two suction cups for easy and secure placement in your aquarium.

Product Details

  • Product Dimensions: 12 x 1.5 x 3 inches ; 12 ounces
  • Shipping Weight: 12 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B007GDXCVI
  • Item model number: CH12300
  • Average Customer Review: 3.6 out of 5 stars  See all reviews (36 customer reviews)
  • Amazon Best Sellers Rank: #35,575 in Pet Supplies (See Top 100 in Pet Supplies)

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
I actually got this for brewing large 50-gallon batches of beer. I have now switched to doing my fermenting in the winter because even when we had a run of 20 degree weather for 10 days the mash temperature didn't change at all. It was very consistent the whole way through. Filling the barrel with 60F water took about 24 hours (at 50 gallons) to get up to temperature and I was very pleased as a result.

Funny side story, a downstairs neighbor from my business makes Kombucha as his business. He was having trouble keeping his multiple vats at a stable temperature for a consistent product. He now runs 100 55-gallon barrels each with one of these for keeping his product at a consistent temperature which has been great for his business.

I still have no idea if it's any good for aquariums. But great for homebrewing during the winter.
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Verified Purchase
Seems to maintain temperature, only time will tell on longevity of the product. The only semi-negative is it is long, sometimes it has to be mounted sideways.
Year 2, no problems, still maintains the correct temperature.
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Verified Purchase
ordered as backup heater. 1.5 months later after order, I am using it, but after one week, cannot get it to stay on past 76, even though it is set for 82. Also have a 250w cascade, both are in 55 gallon, most of time the 250w is the one that stays on. Maybe just a lemon. Lesson learned, immediately test item even if you do not need. Otherwise you may be past defective item return time.
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Verified Purchase
As other reviews have indicated, these heaters seem to have a tendency to break down. This is especially bad for us now, because the house is colder in the Winter, and our cichlids could be in serious trouble. The warranty service is bad; they don't even take the broken unit back (most companies want them to learn the failure point), and they require a $10 payment to ship a new one. I have lousy Whisper heaters that have worked for 15 years; this Penn-Plax heater is junk.
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Bought this heater because my fishes got ich and had to do a treatment for them, I thought I made a bad choice based on the price I paid but it really worked well for me. The temperature was accurate and it was durable enough until my Pacus got bigger, they would swim by it and smash it into the glass and it wouldn't break. They got the upper hand evevtually, I saw pieces of glass at the bottom of the tank and I wasn't surprised at all. Overall it was a great heater and I'm planning on buying another one soon.
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I bought this heater at my lfs with my original 46 gallon setup and it kept a perfect 76°f for 3 months until I noticed the temp dropping. A lot.. I then tried to adjust the control knob to see if the "pilot light" would go on. The knob is small & located so close to the power cord that it was extremely difficult to turn. The manual says that there is an "easy read red line" that indicates the temp setting - it even points to it in a picture. I could never locate this line. I guessed that a very slight clockwise turn should do the trick but it took almost a full rotation for the light to turn on. Knowing that had to be way too much, I turned counter-clockwise carefully until the light went off. The next morning, my tank temp was over 83°f. I turned it again a full rotation counter-clockwise and it became useless. Replaced it with an Aqueon Pro heater with easy read temp dial knob. Edit: While removing this heater, I found the "easy read red line". It's on the back side - directly in back of the pilot light. I adjusted the temp and plugged it back in. It heated a bit, but less than desired. I'll keep fiddling with it before I replace it.
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Verified Purchase
Guage isn't perfect but it's good heater keeps my 55 at a steady 76 degrees had it over a year and a half and had no problems and for all those that say it breaks did you unplug it during water changes common physics will till you if you rapidly cool hot glass it will break 99% of the time and did you make sure it stayed properly secured
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Verified Purchase
I've been using this baby for about a month now and so far so good, no problems whatsoever (Knock On Wood). Keeps my 50 gallon tank at a constant 78 degress, my fishies are very happy too. Great heater for the price.
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