Hydor THEO Submersible Aquarium Heater 400W UL

by Hydor

Product Features

• High resistance - the first shatter proof heater
• Shock resistant
• Position vertical, horizontal and completely submerged
• Graduated scale for precise maintenance of set temperature
• No damage in case of running dry

Product Details

• Product Dimensions: 3.5 x 2 x 18 inches
• Shipping Weight: 13.6 ounces (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B0006JLPFO
• Item model number: T11502
• Average Customer Review: 3.9 out of 5 stars  See all reviews (12 customer reviews)
• Amazon Best Sellers Rank: #3,994 in Pet Supplies (See Top 100 in Pet Supplies)
  • #25 in Pet Supplies > Fish & Aquatic Pets > Aquarium Heaters

Product Description

Theo Heater. New aquarium heater functioning with the exclusive PTC technology means that this heater will not break or damage when run out of the tank. Theo aquarium heater has all the necessary feature for safe and precise temperature maintenance of the water in your tank. The exclusive technology and the high quality of components guarantee a long lasting product.

Customer Reviews

Most Helpful Customer Reviews

16 of 16 people found the following review helpful:

5.0 out of 5 stars Hydor Theo Submersible Aquarium Heater 400w UL, January 11, 2011

By 

angie - See all my reviews

Amazon Verified Purchase

This review is from: Hydor THEO Submersible Aquarium Heater 400W UL (Misc.)

I have a 125 gallon fish tank and it was hard to find a heater that could keep the water warm with the right price. I went to different pet stores to price a heater it was less watts and more money. I purchased a aquarium heater from another source in which i was very dissatisfied, it worked 3 weeks and stopped. I decided i would give it one more try, so i order the Hydor Theo Submersible Aquarium Heater 400w UL from amazon and i have been very pleased with it. I did find out it is always better to get anything electrical with the UL (certified by Underwriters Laboratories) which is government approved. I would highly recommend this product also i am very pleased with Amazon's service.

.

3 of 3 people found the following review helpful:

5.0 out of 5 stars great heater!, March 7, 2011

By 

roytoy - See all my reviews

Amazon Verified Purchase

This review is from: Hydor THEO Submersible Aquarium Heater 400W UL (Misc.)

got this not too long ago and so far it was been awesome! I have it as the lone heater fully submerged in my 90 tank and it heated up the tank pretty fast. its been consistantly at 82f with no fluctuations at all. would recommend to anyone with a large tank

2 of 2 people found the following review helpful:

5.0 out of 5 stars Great Heater!, March 31, 2011

By 

Gene - See all my reviews

Amazon Verified Purchase

This review is from: Hydor THEO Submersible Aquarium Heater 400W UL (Misc.)

I have a 100 gal tank. I needed to add a heater that would be dependable, safe, and easy to use. The Hydor Theo 400w heater has exceeded my expectations. I highly recommend this heater.