NICREW Fish Tank Filter, Internal Aquarium Filter for Small Tank, Coldwater or Tropical Aquariums, Up to 20L Black

Fantastic filter, I needed a new one as the one that came with the tank I bought the filter was extremely noisy so I ordered this one. It's fantastic, quiet, easy to install and offers good filtration.

Great little filter and pump for the money, fish love swimming against the current and the pump has already started to clear the water. I have it so that the bar is above so the jets fall onto the surface of the water and you can hear a bit of noise from it but nothing too loud and anyway its relaxing. Lots of other similar pumps with different coloured lights but I got just the white and blue one, and so far I can highly recommend it.

Filter works well in itself, a little bit louder than I would have liked when it’s not in the water. Clarity of water is ‘ok’. Size is good, did have to give it a clean sooner than I would have liked.

Fab little fish tank pump. My tank is 20L and it just right. I love that it gives you 2 options on how to install. My fish like the waterfall best. The water is clear and it's easy to clean. I've had it for a week and so far the pump has stuck to the glass. Definitely recommend

I am sharing this video and comment because other users’ comments were very helpful to me as a new fish tank owner. I was not completely clueless when buying this, but their advice helped a lot. It is very easy to use and a very cute filter. Thank you to the seller.

It's ok working when you joint over head pipe it's make good bubbles and water pressure but when you joint liitke pipe with other areengnebts and submerged in water it's doesn't make bubbles just flowing water out. Filterration I think ok because when I seen at bottom of tank that food particles doesn't filered. That actual circulation of water of whole 20 litter tank might take more powerful filterration than this one. I attached here two different pictures that indicated actual filterration unit with overhead parts and other one bottom of tank that you can see food particles wasn't filtered.

Used in a temporary hospital tank for a Blackmoor with swim bladder disorder that is usually in our pond. I found it best to use with the tube attached and hanging out over the edge of the tank, with the twist open part only slightly open on the end of the tube. This gave sufficient gentle bubbles and the aeration level fine. The rain fall was too strong for the size of the tank and our fish was v poorly. It attaches well to the tank and although of course audible it's not overly loud. It's a good price. I found it simple after watching the video. Pleased to report the fish is now upright, swimming, diving down and much happier. After First Aid Aquarium salt, Epsom salts, de shelled peas and 60% water changes daily. He is now having normal food. I have turned the bubbler up and hope to be putting him back in the pond in a week or so.

I purchased this filter due to positive reviews for my small tank, but I am very disappointed. Since using it, several fish have died and the water has remained cloudy. I tried various fixes, but only switching to a better filter solved the problem. I would not recommend cheap options, spend a bit more to protect your fish and maintain a healthy tank.