I had a problem with the Titanium 500…
I had a problem with the Titanium 500 Watt Aquarium Water Heater. Somehow it was sending current into my Guppy tank. I noticed it when I put my hand in the tank to do plant maintenance. It was low enough voltage that it didn’t hurt me or the fish but it stung. I contacted Hygger support and they told me to leave the unit unplugged. They asked for photographs of the unit for their technical staff to review and shipped me a new unit. The unit arrived a few days later and works great. Appreciate their support. I have several Hygger heaters and this is the only occurrence of this issue and Hygger handled it well.