Review on VIVOSUN Submersible Fountain Aquarium Hydroponics Fish & Aquatic Pets ~ Aquarium Pumps & Filters by Frank Alejo

The 1 hose adapter and 1 air venturi adapter included with these pumps are useless. The picture and box show 3 adapters but I only received 2 with each pump. The only hose adapter supplied will not fit the air venturi adapter and therefore cannot be used. The only .51" hose adapter will not fit 1/2" hoses available at Home Depot or Lowes. The adapter is too small so you will need to use a hose clamp or zip tie. Cheap pumps but definitely awkward to use and missing parts so far. I haven't been able to use them yet, so I can't speak about other aspects.