Hello all! I was adding some new driftwood, rocks, rearranging and such in my cycling 20-gallon tank (which when I checked parameters looks to be almost done cycling *insert happy dance*!!! ), ad my Aquaclear 20 gallon hang on back filter all of a sudden stopped. I've had this happen once or twice before, but I just unplug it and plug it back in and all seems fine after that. But it's been about 30 minutes now and it's still not running. It just has the started bio-media in the filter (which also I was presently surprised with when the filter came, it includes carbon, sponge, and just some bio rings). I've unplugged it and plugged it back in, rinsed the filter media a bit to un-gunk it, but nothing worked. The only things I can think would've caused this would be the bristles of my hornwort have clogged it or some bladder snails. But I have a filter sponge on the intake tube of the filter as well. I looked around and saw no snails and not that many thistles inside the filter itself, I'm just not sure. There's no fish in the tank right now, and if the bladder snails die well then I might just have me a party (I'm not overrun, but there's a couple for sure), there's just live plants in the tank. I also have a sponge filter that's running as well, so I'm not too worried about filtration rn in my tank. Both the sponge and HOB Aquaclear have been running for about a month and a 1/2 (nearing two, just my rough estimates). Does anyone know what could be going wrong??