
My 800W Hygger HG921 broke down after 6 months. The wrench light was on and the temperature on the display was over 97 degrees. I put my finger in the water to check the temperature and felt a small electric current. I turned off this heater and the electric current disappeared. I'm glad my Oscars didn't get electrocuted. Hopefully the second/spare hygger in my tank will last longer. Update: A crack was found in the PCB insulation in the heater housing.

Convector Electrolux ECH/T-2000 M, white
21 Review

๐ Fluval E300 Electronic Heater - 300W Advanced Aquarium Heater for Tanks up to 100 Gallons (A774)
9 Review

Sectional radiator Royal Thermo PianoForte 500, number of sections: 10, 11.7 m2, 1170 W, 800 mm.
31 Review

Tetra HT Submersible Aquarium Heater: Efficiently Regulate Temperature with Electronic Thermostat
9 Review

๐งฒ Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
34 Review

Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review

Mini pump Xiaomi Mijia Electric Pump 1S, plastic, black
55 Review

Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
37 Review