I've seen some reviews saying some sections work very well and some don't. Same thing happened with these two, one worked fine and the other didn't, but instead of assuming it was faulty I just flipped it around a bit and the bubbles started flowing, just as well as the one that worked fantastic. They all work great, I think you just need to put it in a good position, or at least it worked for me.
Humidifier / air purifier "Fanline Aqua VE400" with an ionizer, with a capacity of 410 gr/h
44 Review
KEDSUM Battery Aquarium Air Pump: Ultra-Quiet Rechargeable Fish Aerator with Dual Outlets - Ideal for Fish Tanks, Outdoor Fishing, Fish Transportation, and Power Outages
35 Review
Sink filter Prio New Water Start Osmos OU380 white
79 Review
KEDSUM Quiet Rechargeable Battery-Operated Aquarium Air Pump With Dual Outlets - Perfect For Fish Tank, Outdoor Fishing, Transport, And Emergencies
28 Review
𧲠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
Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
37 Review
π U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
22 Review