« Grìffîñ » wrote:
Tynk wrote:

I love sponge filters!
They are a lifesaver (literally) for fry.
I have even made my own for Betta fry tanks out of pvc pipe and "clean"
sponges. By clean I mean not used, and NO chemicals in them. Your
average dish sponge has toxic chemicals in it and cannot be used.
I made my own because I got tired of the ones in the shops you can buy
that tend to float up.
They're also a great thing to "seed" a new tank and add the benificial
bacteria to it.


Please tell me what type of sponges I need to look for in the stores.

Make sure you use reticulated filter foam, as this type is much more
porous, trapping larger bacterial colonies and lasts longer. The better
manufactured ones are made from this (but not all).

Carl