Customer Reviews

Hydor THEO Submersible Aquarium Heater 400W UL

5 star:		(8)
4 star:		(1)
3 star:		(0)
2 star:		(0)
1 star:		(3)

 

 

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.

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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

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.

this heater does not shut off when required . i am tryin to maintain a 80 degree temp but i currently have heater set to 77 and water temp is 81-82 degrees . Im sure once i find the correct setting it will work great but the settings are worthless

This item keeps my 75 gallon tank at the right temp all the time after a few months it still keeps the same tropical water temp. I highly recommend you buy this brand as it works great for me!

keeping my fish happy and warm

I ordered on a friday and it arrived on mnday. This heater works great! It keeps my 125g african tank at 80 degrees. Highly recommend this economical heater!

I have mine in a 75 gallon aquarium. Reaches increased temperature, if needed, in good time and holds set temperature very well. Just set it and forget it!!

got it for my turtles aquarium and it works wonderfully. keeps the take nice and warm and my turtle is happier than ever!

Quick and efficient customer service, product arrived as described on website. Would be more than willing to do service with them again .

I received this heater on 11-3-11. It lasted 36 hours before it blew out the bottom of the heater and electrified the water causing my husband to received an unpleasant electrical shock. I bought 2 of these heaters at the same time so at this time the failure rate is 50% . I'm waiting for the next one to go. Would not recommend this heater at all!