
I was disappointed to see all the negative reviews on this item. Getting started is relatively easy. Three tips: 1. The piston should be below the water level in the gravel vacuum. This is necessary for gravity to allow the water to flow. This was difficult for my setup, which consists of two tanks on a stand - the bottom one is just a few inches off the ground. Do your best to remove air from the gravel cleaner. I do this by lowering it parallel to the bottom into the aquarium with the open end slightly up.3. While squeezing the siphon, place your thumb on the open end of the siphon. This creates a better seal than the inner sphere. It's still tricky to get it working when your tank is near the ground, but it's an easy device to use.

KEDSUM Quiet Rechargeable Battery-Operated Aquarium Air Pump With Dual Outlets - Perfect For Fish Tank, Outdoor Fishing, Transport, And Emergencies
28 Review

Sink filter Prio New Water Start Osmos OU380 white
79 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

Aquael Fan Filter Mikro Plus
35 Review

π§² Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
34 Review

Mini pump Xiaomi Mijia Electric Pump 1S, plastic, black
55 Review

Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review

Vacuum cleaner TEQQO Aquastick 3 in 1 Power, grey/turquoise
26 Review