I use it to heat water in buckets when changing water where built-in temperature sensor and external controller are necessary features. They work great. These are actually glass heaters (I would have preferred a metal case) but the protective plastic case has worked well so far to prevent breakage when stored, dropped in buckets etc.
YukiHalu Mini Submersible Aquarium Heater With Thermometer And Temperature Controller - 25W, 50W, 100W, Or 200W Options For 5-40 Gallon Fish Tanks
25 Review
Sectional radiator Royal Thermo PianoForte 500, number of sections: 10, 11.7 m2, 1170 W, 800 mm.
31 Review
Faucet water heater with display
13 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
๐ U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
22 Review
Vacuum cleaner TEQQO Aquastick 3 in 1 Power, grey/turquoise
26 Review
Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review