Marineland Visi-Therm Aquarium Heater

I was very skeptical getting this heater at first. Because first off, there were no reviews regarding this ANYWHERE. So I kinda took a shot in the dark buying this one after searching hours for a heater for my 2 gallon aquarium.

It may be more expensive than other heaters for small aquariums but so far.... I think it's worth it.

It's getting the job done. I love how it doesn't look tacky in my aquarium (I was worried it would look really bulky) but it blended in just fine. It has it's own holder (so you don't have to worry about it dangling in the aquarium like a rabid lizard) And my Betta fish loves it :) He's currently "resting" underneath it.

And I love how you can adjust the water temperature by actually seeing NUMBERS. Other heaters let you control the water temperature blindly and making you unplug it when the water gets too hot (which in my opinion, is fish murder). This heater has an automatic switch so it turns of by itself when it gets to the desired water temperature.

Safe to say, SO FAR, this is the best heater I've had. =)

TO ANYONE CONSIDERING THIS HEATER:

I have had this heater for about 5 months now. It worked great for that period of time but today I came home after being out of town overnight and the temperature in my tank was a whopping 91º!!!!! As this is a saltwater aquarium, everything survived....LUCKILY!!! You may have different luck with this heater than I did but be warned that the thermostat may just decide to stop working and cook your fish while you sleep!

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I had a marineland Visi therm heater in my marine aquarium and for no reason the glass on it cracked. The heater was in a water level controlled sump where it was never in contact with moving objects of fish so user error is NOT an issue here.

A large section of glass simply "fell" off and exposed all the live coils to the water. The heater smoked and stunk the entire room out.

Everything in my tank was electrocuted to death instantly and I am now out hundreds of dollars in livestock.

NEVER EVER EVER EVER buy this product.

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After a year, I decided that my previous heaters the Hydor mini heaters were not adequate for my bettas due to the fact that they never got their water to the proper temperatures. They only heated their tanks just a few degrees higher than what the temperature in my apartment. After much research, I ended up buying four of the Visi-Therm Deluxe Submersible Heaters 25W for my four boys so I could be able to regulate the temperature settings. After a brief trial and error with the temperature settings, I finally got my boys' tanks at a temperature of warm and toasty or what it should be for betta splendens (i.e somewhere between 78 to 82 degrees). I had a bit of a struggle getting the suction cups to attached to the heater but evenutally I did. I like that the light will go on notifying me when the heater is on, and turns off when the temperature of the water is near being too warm. Because Ra's temperature was only at 69-70 degrees with his Hydor Mini heater, my little boy was cold. When I put in the Visi-Therm and brought back the temperature to over 75 degrees, Ra started making bubble nests again. I definitely will never go back to using a heater where I can not control the temperature. After a couple of months of owning the Visi-Therm Deluxe 25 heater, they are still working properly for me. I have read horror stories about this particular heater but from my personal experience, they have not malfunctioned.

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I originally had a 50W Marineland Stealth Pro, which has worked perfectly in 6G Fluval Edge with a nice design small and dark to blend in with the plants in the back, and a clear dial and pilot light at the top and not in the tank, where it distracts. That one was recalled due to explosion and fire hazard, and unfortunately has not been reissued.

As a replacement, Marineland sent a Visi-Therm of equal power. It has a more obtrusive design making it harder to hide, and a bright pilot light very obvious at night. But it initially worked ok.

However, after a couple of months it failed open, and the tank started cooling. I caught it right away, and did not lose anything. And this is better than exploding and blowing the tank out.

Disappointing nevertheless...

My brother had the opposite experience with this heater losing his fish due to a thermal run away.

I think, I am done with Marineland.

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