2‑in‑1 Aquarium Vacuum | Air-Lift Gravel Cleaner for Fish Tanks, No Water Change, Quiet 45–50 dB, Suitable for Water Depths of 7–10.6 inches (Small)

This gadget is actually quite amazing and worked great. Assembly was simple, though a couple of my parts were very firmly stuck together and took a bit of gentle “finesse” to pull apart without cracking the device. Adjusting the height of the air stone in the tubing adjusts the suction power and it had significantly more suction than I expected. It did suck both sand and gravel substrates into the tubing, but a gentle tap was all it took to dislodge the substrate and none of it ended up in the filter portion of the cleaner. Still, my filter got quite gross, proving that it really was catching plenty of “gunk” from the substrate. A quick rinse with non-chlorinated water was all it took to clean the sponge and other pieces when I was through.The filter sponge feels thinner and cheaper than the typical aquarium filter sponge, so I would recommend buying some spares to have on hand. You will also need to provide your own air pump and an air stone.I do have a gravel siphon that I have used while changing water, but it never allows me to clean all of my substrate before having to stop because I’ve removed enough water. I will still use the siphon for water changes, but this handy device will help keep my tank a lot cleaner and healthier.