I bought a fan and the water in my aquarium has dropped 4 degrees. I chose one with two fans (this one). even though it works, it only lowered the temperature by 1 degree, only 5 degrees. So buying a Dual changed little. Not only that, these fans are a bit noisy. For now they work, but I'm currently checking other options.
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
Accumulative electric water heater Thermex Ceramik 50 V, white
11 Review
Faucet water heater with display
13 Review
π§² Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
34 Review
π U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
22 Review
Mini pump Xiaomi Mijia Electric Pump 1S, plastic, black
55 Review
Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review