Bought two of these to keep my Beta tanks warm. One of them does a great job of maintaining the desired temperature (about 80 degrees) but the other was very sensitive; The smallest turn of the temperature dial causes the temperature to change between 65 and 90 degrees (which isn't great if you don't want to cook the fish). It's definitely the cheapest heater I've seen, so I guess you can't expect top quality, but for the most part it does the job well.
Hardy Leaf Black Forest Asian Java Fern Potted Live Water Aquatic Aquarium Plants For Freshwater Fish Tank By Greenpro Microsorum Pteropus
39 Review
Accumulative electric water heater Thermex Ceramik 50 V, white
11 Review
Tetra HT Submersible Aquarium Heater: Efficiently Regulate Temperature with Electronic Thermostat
9 Review
Sectional radiator Royal Thermo PianoForte 500, number of sections: 10, 11.7 m2, 1170 W, 800 mm.
31 Review
Vacuum cleaner TEQQO Aquastick 3 in 1 Power, grey/turquoise
26 Review
Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review
Greenpro Micranthemum Monte Carlo: Live Large Pearl Grass Aquatic Plant In Tissue Culture Cup For Freshwater Fish Tanks And Aquariums
49 Review
Mini pump Xiaomi Mijia Electric Pump 1S, plastic, black
55 Review