After trying several brands and styles of heaters we finally found one that works as advertised. The only thing we didn't like was that the green light was so bright. Our fish are used to sleeping in the dark so we thought it might bother them. We just covered most of the listing with a sticker that came with another aquarium product and solved the problem!
Faucet water heater with display
13 Review
Tetra HT Submersible Aquarium Heater: Efficiently Regulate Temperature with Electronic Thermostat
9 Review
Accumulative electric water heater Thermex Ceramik 50 V, white
11 Review
๐ Fluval E300 Electronic Heater - 300W Advanced Aquarium Heater for Tanks up to 100 Gallons (A774)
9 Review
Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
37 Review
Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review
Efficient 2-In-1 Magnetic Fish Tank Cleaner With Non-Slip Design And Scratch-Free Blades
37 Review
Vacuum cleaner TEQQO Aquastick 3 in 1 Power, grey/turquoise
26 Review