Replacement JBJ 12 Gallon Nano Cube Aquarium Sponge - 9 Pack

These are a perfect fit for my 12 gallon Nanocube. Thank you!

The most annoying thing wasn’t that the sponges are just dense foam pieces, not even close to real JBJ sponges, but the seller tried to actually convince me, when I opened them and immediately went on the app to return them, that I don’t know what I was talking about and that JBJ tanks take different density sponges and these are what my tank has…I have 5 JBJ tanks in different sizes, for decades! None use these kind of foam sponges.Don’t use these in your JBJ tank or you will be changing them, while crashing your tank, weekly.

good quality. no issues with sponges causing excessive PH drop like some super cheap sponges

they look legit , i hope they work good , wont be a few months till i use the,. ill add more after i use them.

Super good

These are not at all like the oem JBJ filters, much more dense this causing lower water flow, messes up the gas exchange and flow rate of the tank

I was very disappointed in what I received. It wasn't replacement filters that one would expect to use to change out the old ones. I received a bag full of scrap pieces of foam, like old packing material, in fact it was old packing material because it was long strips with the middle hollowed out as if it fit around something circular that was packaged with this material around it.l It was a rip off

Pieces of high density packing foam - not at all like the JBJ sponges. Don't waste your time or money.