boxtech Mini Aquarium Sponge Filter，Internal Fish Tank Filter for 10-30L Fish Tank (No Include Pump and Tube)

Amazing product. I am so amazed of this product. I have a small 60L tank and I wanted one extra filter and beside that, it has a air feature. The item is amazing, very good quality and does its job. Small and cute.

Been using for a while. Works well as a medium for bacteria in fish tak. Water is crystal clear. Only problem is when I put on the bottom of my tank the bubbles stop. Good job I have a bubble maker as well to move the water. My air pump is brand new and can put air through 2 things, so I have no idea why it works when the filter is only submerged a few inches, but not when 12 inches down.

For our small tank with just a couple of fish in this is a very good fit. It's easy to clean and use and look good as well.

Fab filter Comes with valve Happy fish Brought the pump separately Easy set up

Bought this filter for goldfish tank but it is rubbish as it cannot filter the algae! The problem is the bottom half of it is filled with pellets that do noting and the top half has a piece of plastic foam with large holes that cannot filter out algae. Maybe it can filter out large plants but it is useless for keeping tanks clean.

Cheap enough and nice size. Doesn't seem to work as well as the reviews say. Setup ok with a good pump, water still has bits floating in it prior to putting fish in? Will wait and see.

This little filter has saved the day, i have a new aquarium set up, and used all the tap safe and filter aid products and let the filter run for 2 days before getting the fish, after 2 days my water was going milky, the soultions i added were just creating a milky film and not being mixed by the filter, infact i very much doubt the new filter was working at all. I got this to assist my existing filter, it arrived today just intime, as i couldnt see through my tank as you can see in the 1st picture, i instantly set the filter up, it took less than 1 min to attach it to my air pump and plonk it in the tank -pic 2, to my utter amazement, 5 hours later my water is almost crystal clear -pic 3, and the fish are now swimming about and playing happily in crystal clear water. I have purchased a 2nd one and will be binning the crappy filer that came with the tank, 100% reccomend

I have this for my daughters fish in her small tank and it cleared the water quick. I chopped down and placed a cycled sponge from my main tank on the outlet to aid cycling the filter. When the sponge gets too clogged I’ll probably diy a medium sponge and replace it in two halves over a 6 week period. Should be ok for a long time yet though.