boxtech Aquarium Biochemical Sponge Filter, Ultra Quite Aquarium Double Head Bio Sponge Fish Tank Foam Filter-Green

At first, it seemed to not work even for my small 5-gallon tank. I was disappointed, especially after I read negative reviews. But then I studied the water flow inside and gave a second chance. Actually, my motor is very weak, but the filter did it's work overnight. The tank became cleaner in 1 day and I squeezed a lot of dust from the sponge. If you have a little stronger motor, you can enjoy faster cleaning and wavemaker

Great filter easy to use, very versatile, filters well. I like the fact that it was easy to assemble.Powerful immersed filtration and aeration for my aquarium. My little baby fish were flying around lol. But the adjustment knob made it perfect.

Just buy your own trachea and air pump for you to use this product. Because these were not included in the pack. Size fits my water tank.

I have ordered this sponge filter simply as a addition to my breeding aquarium, however the filter is HUGE regarding its dimensions. I would assume that the aquarium must have at least 100L capacity if not even more in order to fit this specific filter. I can't understand why they wrote "...for small aquariums".

Conformer à la description et répond au besoin que j’avais!

I wouldn't use this as a stand alone filter for any tank over, say 5 or 10 gallons but it does make a fantastic additional filter to clear the water of smaller particles and polish the water.The fact this filter comes with 2 spare sponges and has a total of 4 bags of bio media with it for the price is brilliant!Perfect for small fry too.Obviously you need an air pump to feed it the oxygen (not included)This easily fits on to the hole at the back of the filter and everything is nice and quiet.I've kept fish for over 40 years, and can tell you, for the money it's great!Buy it, but please don't ONLY use this as it'll only work as an additional filter.Very easy to install too.Highly reccomend.

Super hässlich aber Filterleistung ist gut. Die kleine Dose unter dem Schwammfilter ist ausreichen groß für eigenes Filtermaterial. Es passen 5 bis 6 Normale siporax hinein. Mit Siporax Mini laufen diese Luftheber echt gut. Für kleine 10 bis 20 Liter Aquarien find ich sie ausreichen.

Idéal pour mon aquarium 20 litres. L'eau reste claire. Le nettoyage complet se fait beaucoup plus tardivement que lorsque j'avais la pompe "classique".

Il filtro è facile da montare anche se bisogna fare attenzione alle sfere, non avevo chiuso bene il filtro e me le sono ritrovate tutte nella vaschetta dei pesci rossi, funziona obbligatoriamente con un ossigenatore non compreso. Fa il suo lavoro, l'acqua è veramente pulita, almeno a vederla, così non va cambiata di frequente, qualità prezzo penso sia valido, la plastica è un po' delicata ma senza esagerare non si rompe niente.I pesci da quando ho messo questo filtro sembrano più reattivi, sicuramente qualcosa fa.Consigliato.