Just spoke with representatives from Marineland. I explained that I was always pleased with the accuracy and reliability of the VisiTherms, and I chose them over stealths because I wanted to see the red indicator light on in my discus tank from across the room. The heaters had always been rock solid reliable for me over the years. The customer service rep I was first connected with did the job she was supposed to do and told me their policy is no refunds, but to replace either with the same item or the value of that item towards any of their other products. I explained that I wanted to speak with a manager, I was afraid to continue to use these new heaters. The tank that took a 10 degree downward plunge has my breeding plecos in it. They cannot be replaced if I lose them, nobody sells adult L144's.
The customer service rep was aware that the heaters were being "trashed" on the internet and that they've actually had very few issues.
I would like to request anyone posting about the failures of these heaters in the future do so respectfully and state the facts. We've never condoned trashing any company or store.
The manager I spoke with was very nice to talk with and understanding of the distrust I now personally have for using the heaters in my tanks. She mentioned that although people may talk that something is wrong with the heaters, they actually get very, very few heaters back. So they are not seeing any evidence to support that there are a high number of heater problems. So if there are truly problems with your heaters, I urge you to go through the store you purchased them from and get them replaced so that Marineland can gather evidence of any problems. The place you purchase the heaters will then send them back to Marineland. At a minimum, send their customer service a letter to document the issues, even if it is only the fact that your heater is 4 degrees off on accuracy. They cannot resolve or fix a problem merely because a handful of people claim to be having a problem.