I bought 2 of these (4800 gpm) direct from the supplier as I was lucky to get a much better price. I'm happy with them. I don't use the maximum volume so as not to damage my elegant coral, which is fine. I use 2 pumps in alternation mode on my 270 gallon tank. My tank wall thickness is 1" acrylic and the magnetic grip is adequate but probably not adequate for thicker tank walls. The manual is definitely helpful in letting you know the modes, but I had to take a picture of it to read it hopefully. permanently. Edit: 6 months old and they still work. Edit: 18 months old and one of the engine cases has a dent in the back and has stopped running. (Check all other parts by replacing them with my working unit , and they're fine.) They're now too expensive to replace at 3.2x what they originally paid for.
KEDSUM Quiet Rechargeable Battery-Operated Aquarium Air Pump With Dual Outlets - Perfect For Fish Tank, Outdoor Fishing, Transport, And Emergencies
28 Review
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
Vacuum cleaner TEQQO Aquastick 3 in 1 Power, grey/turquoise
26 Review
Efficient 2-In-1 Magnetic Fish Tank Cleaner With Non-Slip Design And Scratch-Free Blades
37 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