NICREWAquarium Internal Filter, Submersible Power Filter with Adjustable Waterflow, Aeration System with Sponge Filter for Fish Tanks 10-20 Gallon, 100 GPH, 7W

Update: I gave up on this. It gets clogged up so easily, I was having to clean it every day or it would stop working right. I've got 8 tanks, I'm not inexperienced but I struggled to make this filter work correctly. I went back to a sponge filter and my tank is so clear now! I should have kept it running instead of this filter.________I've never had so much trouble with a filter before. I was using an internal sponge filter and switched to this filter because the tank is in my bedroom and the bubbling was annoying.The pieces aren't great. I wanted an elbow piece to attach to the spray bar so the spray bar was vertical with the filter but the pieces don't fit together to make this. *Edit: if you use enough elbow pieces you can do this but the spray bar is very longI keep having to clean this filter out, things keep getting stuck to the slits on the side where it pulls in water. You would think that's a good thing but it blocks the filter and then the air tube and regulator stops working and doesn't produce bubbles anymore.If you have the air tube and regulator on it helps to turn the tubing inlet so it is horizontal, it seems to keep the water from going into the tubing, th water stops air from coming out when this happens. It's also very loud. I don't know if it's the regulator that is bad or what but the bubbles are really fine and they crackle as they come out. You can close the regulator almost all the way and it is still loud, sometimes it sends the air out in short loud bursts.Ramshorn snails keep getting stuck in the part of the filter where different arts connect, they are getting their bodies stuck in crevices then they can't get back out and they die. I learned this the hard way when I went to pull one off the filter and I pulled it's insides out of its shell.As of right now I definitely wouldn't recommend this filter

I use this filter in my 20 gallon to polish the water if I stir it up. I pulled out the carbon (since I didn’t need it for my purpose) and replaced with poly fill. Works amazing.

Runs quietly, filters great and reasonablely priced. Would buy again.

fish love it

It’s extremely powerful for the size. Major difference in flow compared to my old in-tank filter. My fish seem entertained with the currents.It is noticeably more noise though. Not extreme, but when I put my ear to my tank I feel bad for my fish.I’m going easy on the assembly o-rings. I wish there was a better way to lock the pipes in.If I dare make them tight they will be clocked to the wrong position. I have to gently use pliers to adjust my flow tube angle.I can work with it though. I’ll find a way to disassemble efficiently.Currently the top part sticks so well with 4 cups it’s almost impossible to get off without something flat to break the suction seal. Then the filter portion only has one lower one so it pops off and gets cockeyed super easy.When you do get it apart a big cloud of trapped gunk comes out in the water. So it has to be cleaned regularly to keep working properly.Price is very nice though!