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

Had it for a few months now and she’s still going strong. Many other cheaper filters I’ve tried are generally rubbish but this one was a good find so I’ll give myself a pat on the back for that. I’m lazy so don’t clean it as often as I should but even so it doesn’t stutter on keeping the tank nice and clear and runs 100%. I did find the nozzle with the holes that give the waterfall effect is easily clogged with food debris and can be difficult to clean. I’ve had no issue with the straight nozzle however. Cable is a good length and the power in the water flow is great. It’s easy to put together and generally easy to clean as well as great value for money. Highly recommend.

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.

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.

Excellent mini filter ideal for beta tanks cleans the water excellently but you have great control of the water flow to speed it up or dial it back.

Works perfectly and no noise

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.

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.

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.