I'm in a fix again. This time my tank's (10g Top Fin tank and filter) filter (I replaced the filter media with a sponge) is disintegrating! I opened up the filters cover today, just to have a look and found small peices of sponge floating inside. The sponge is pretty dark colored too. The bits aren't getting into the water as I'm using sponges in the output and they seem to hold them back. The filter media sponge has only been in there about 3 weeks. The stats on the water parameters are:
PH: <=8 (normal for my water)
I'm worried about pulling out the bad sponge and losing my beneficial bacteria. Next time I'll be smarter and put the sponge in a filter bag. Any ideas on what I can do right now? Thanks.