Marineland's Visi-Therm Deluxe Heater is reliable and accurate. It maintains a temperature within one degree of the set temperature. The temperature is easy to set and it lets you know with a "click" sound for every adjustment. The Visi-Therm Deluxe also lets you know when it is working with a clearly visible LED on/off light. Newly designed unit features a double-strength glass casing for extra protection against aggressive aquarium dwellers. Newly designed mounting bracket features three windows for easy visibility of temperature setting.
I purchased this heater in mid November 2013 its just now end of December and it has already quit working....the light is on all the time but no heat.....complete Junk....wish i had read the reviews before i bought it!!! Only giving it 1 star cause you have to .....should be in the negatives
not a good heater 11/2/2012
the other two one star reviews pretty much some it all up.
really simple dont buy this heater it will fail quickly and of course when it is needed most!!
Horrible Heaters 9/21/2012
I had the stealth heaters that got recalled and got these from Marineland. After several months of use three out of the six replacements have failed. The most recent one the light was coming on like the heater was cycling. With the weather getting colder the water temps started droping. This was the only way I noticed. Thanks to these horrible heaters I have now lost another tank of Tropheus. So for a heater that didn't cost as much as the stealth. Marineland has cost me another four hundred dollars in fish. Buy another brand of heater and save your fish.
These are jumk! 7/1/2012
Reviewer: Disappointed Customer, Ed
I've had many of these heaters in the past. Unfortunately, I returned the two that worked as part of the recall in 2011 as the replacements supplied have already stopped working. The first lasted about 8 months and when I went to replace it with the "alternate" the alternate did not work from the time It was removed from the box. If you ask me their quality is very questionable and I would recommend a different manufacturer for your heater of choice.