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

Better quality than expected. Works really well as a filter, which means I can clean the filter every 4 days or so. It's really easy to clean. I just take a jug of tank water and wash the sponge and filter bag in that. I've only had to clean the inner plastic twice with a brush, as it doesn't interfer with the working power. This was definitely an upgrade to the filter that we initially had. Also, he loves the water fall on it! I think it's a relatively quite filter, it's not much louder than the starter one, especially at night when the waterfall bit is under water level. It doesn't disrupt sleeping in the same room. Good quality for the price! If I had to pick it apart, some times it takes a couple of times to click it back together. But I'm very fragile anyways haha

Handy device! Good value for money and powerful. Easy to assemble, visually pleasing and looks great in a tank. I’ve got it on the ‘rain’ setting so it’s quite loud but their are other ways you can set it up.

This filter is very good, it's small but powerful. The size of it fits perfect in my 16L tank, it's quiet and doesn't make much noise at all which I like as it doesn't disturb me too much. The most noise it makes is a really quiet humming background noise but barely noticeable. The only negative thing is that it is very powerful so it moves my sand substrate around a lot, to avoid this I have placed my filter horizontally in my tank and now it is completely fine. The filter itself has suction cups and they are very strong when stuck to the glass, doesn't move at all. It's very easy to set up and install. Another good thing is that this filter comes with a filter sponge so I didn't need to buy that separately.

The pump is small, but it is surprisingly quiet despite having enough power to produce plenty of air bubbles it to oxygenate the water. I have a larger filter for keeping the water clean, this will add to that too of course, Good for the price, easy to assemble the pies, and looks easy enough to clean the fitters out too. I got it primarily to add oxygen to the water during the hot weather, and I am very happy with the results , it been running for a bout a week now and the fish are a lot more active with than with the old air stone on the end of a noisy pump which was on its last legs.

Great works well great flow power is great filter quality perfect. Great little filter

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.

Good filter does the jon easy to clean and use. Not noisy gives good water flow.

Really quiet and efficient, for 6 days. After 6 days the filter completely failed. I lost 12 fish. I was out of the house for 4 hours, on return the filter had stopped and fish were dead.