I am wondering everyone's thoughts on these double element heaters? It looks like the controller adjusts the wattage to maintain the set temp. I do like the compact size, especially considering this one is 500 watts. This one is made by Hygger.
www.hygger-online.com
hygger Submersible Double Quartz Heater - hygger
hygger submersible double quartz heater from 300W to 1000W with intelligent auto stop heating system for freshwater and saltwater 40-260 gallons aquariums.


