Hygger Aquarium Gravel Cleaner Black

I've purchased two of these in total, about a month apart. The first one worked great the first time I used it. The second one worked great the first time I used it as well. Today I tried to use the newest one (the second one) again, because it's a new tank and I'm doing multiple water changes as my fish are new too and are getting quarantine meds. But it won't work. It just doesn't suck up water. The trigger gun suction is the whole beauty of this item and it doesn't work after just one use. I'm returning it. But I still need to do a water change so I went and grabbed the first one (the older one) and tried to use that one, and same exact deal. Zero suction. That trigger gun just has no ooomph now. You can feel the difference when you're pulling the trigger. It's crazy that it just stopped working after one time for both of them! They could not have worked more perfectly the first time I used each of them. So to recap, I have two of these that only worked one time each. One is outside the 30-day return period by about 8 days and one is inside of it and is being returned. I will contact Hygger about the one that's outside of the return period. It's too expensive of an item for a one-time use only. I have no idea how I just randomly happened to get two bad ones or if people are just not updating their original reviews, but buyer beware. They don't last like they should. Hygger is a good name, or at least I thought it was supposed to be good, but this is not a quality product like I would have expected from them.