I have looked online on how to make sponge filters and I want to know from seasoned Betta owners what design works the best for adult and fry Betta?
Could you show a picture or instructions on how you made it I made two but im not sure if they are working.I'm not a fan of sponge filters for adults. It doesn't filter as good as regular filters. BUT it is great/safe for fry/young bettas. I use a home made rectangle shaped sponge, placed at the center back of the tank.
The basic principle is making the water go through the pores of the sponge so debris can be filtered.
Its never cheaper here the euro sucks and the taxes on everything are super high plus I have a lot of the material already just need a good design because I'm not sure if mine are working.I don't know how it works in Germany but at least on ebay and other website like that, there are really cheap sponge filters. To the point that it is cheaper to buy them than to make them. Just thought you might be interested in checking those out before trying to make them.
I went to the link and it is for the best way to euthanize a betta lol, you trying to tell me something?You may find this recent thread useful.