http://www.amazon.com/Fluval-M-300-...iewpoints=1&sortBy=bySubmissionDateDescending
153 reviews on the Fluval M series heater.
Out of 153 reviews, and a 1-5 star rating, 27 gave this model a 1 star review. And, some of those reviews were major fails with the glass tube fracturing.
As previously stated, I think that at this point every single brand of aquarium heater on the market has failed, and a percentage of each brand/model will continue to fail as long as manufacturers continue to use low quality low cost parts. Until then it's pretty much a game of russian roulette, with a $2.00-5.00 (cost) product that's controlled by a 50 cent made in China component.
I recall several yrs back someone asking Dr. Timothy Hovanec (from Dr. Tim's Aquatics) if he would consider creating a high quality reliable aquarium heater and his response was basically that he would not, as the cost would be too high compared to what hobbyists are currently used to paying, that very few people would buy them. Unfortunately he's probably right, which is why most mass produced aquarium heaters are the quality that they are. Some failure is acceptable, apparently from some companies much more failure than others.
The article below is a pretty good read on this subject, the author shares much of my personal views on this subject.
http://www.beananimal.com/articles/aquarium-heaters-what-you-need-to-know!.aspx
To which I will add with regards to overall safety - adding a simple $10 grounding probe, and running all electrical appliances through a GFCI protected power bar cannot only save a disaster in ones tank, it can also save lives.
A couple of years ago when Marineland Stealth heaters were cracking, blowing up, and basically failing left right & center, my probe/power bar combo picked up stray current from an older Stealth heater in one of my tanks that had begun to crack near the top of the heater, and due to the ground probe tripped the GCI breaker, instead of me having to become the ground on my next water change.
I would have never noticed this in my tank with the naked eye, and it potentially saved me from a disaster as many of these "cracks" ended up with the heater blowing up like a small pipe bomb. In a few cases they actually blew out the end of a few individuals tanks.
Good luck with whatever you decide.
153 reviews on the Fluval M series heater.
Out of 153 reviews, and a 1-5 star rating, 27 gave this model a 1 star review. And, some of those reviews were major fails with the glass tube fracturing.
As previously stated, I think that at this point every single brand of aquarium heater on the market has failed, and a percentage of each brand/model will continue to fail as long as manufacturers continue to use low quality low cost parts. Until then it's pretty much a game of russian roulette, with a $2.00-5.00 (cost) product that's controlled by a 50 cent made in China component.
I recall several yrs back someone asking Dr. Timothy Hovanec (from Dr. Tim's Aquatics) if he would consider creating a high quality reliable aquarium heater and his response was basically that he would not, as the cost would be too high compared to what hobbyists are currently used to paying, that very few people would buy them. Unfortunately he's probably right, which is why most mass produced aquarium heaters are the quality that they are. Some failure is acceptable, apparently from some companies much more failure than others.
The article below is a pretty good read on this subject, the author shares much of my personal views on this subject.
http://www.beananimal.com/articles/aquarium-heaters-what-you-need-to-know!.aspx
To which I will add with regards to overall safety - adding a simple $10 grounding probe, and running all electrical appliances through a GFCI protected power bar cannot only save a disaster in ones tank, it can also save lives.
A couple of years ago when Marineland Stealth heaters were cracking, blowing up, and basically failing left right & center, my probe/power bar combo picked up stray current from an older Stealth heater in one of my tanks that had begun to crack near the top of the heater, and due to the ground probe tripped the GCI breaker, instead of me having to become the ground on my next water change.
I would have never noticed this in my tank with the naked eye, and it potentially saved me from a disaster as many of these "cracks" ended up with the heater blowing up like a small pipe bomb. In a few cases they actually blew out the end of a few individuals tanks.
Good luck with whatever you decide.