Review on 🐠 YCTECH Automatic Aquarium Gravel Cleaner: 6 Watt Filter for Cleaning Gravel, Filtration, Pro Sand Washing, Water Changing, Sludge Extraction, and Dirt Suction - Fish Tank Sand Cleaner by Luciano Filpo

This aquarium vacuum was delivered without an instruction manual. There were tiny diagrams of each step to put it together. The assembly wasn't difficult. I put it in the aquarium and started sucking. Suddenly I was splashed with water pouring out of the hole in the handle! Obviously there is a small damper that needs to be lowered to allow water to circulate in the machine. I did not know it. I also think I'm missing some parts. I don't know how to use it. I will keep trying. I had big problems with the last one too. Maybe these gadgets just aren't working as effectively as I had hoped.