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.

For its size its quite powerful and perfect for my 40L tank , the bubble option is great

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.

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.

Works really well

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.

Lasted 1 month, it started off really powerful but just quit all of a sudden.

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.