Oldman47,
While on this topic, I thought of two more things:
I feel we should mention one of the standard warnings to beginners about how any household cleaning thing you buy with the intent to use in your aquarium should be carefully studied/inspected to be sure the manufacturer hasn't "helpfully" added soap or anti-bacterials to it!! Plastic potscrubbers would fall into this area. Be SURE the potscrubber doesn't have anything added of this sort (you might even have to do a tentative taste test!)
Secondly, thinking about the potscrubbers gets me thinking about all the myriad types and styles of these plastic stranded and open-pored rough spongy things and potscrubbers. To "plastics designers/manufacturers" have a vocabulary to describe these different things? Do any of us have a way to categorize these different materials?
Seems to me they can vary tremendously in detail. Some stranded things have round strands, some have sharp, rough strands. Some are more structured and like a sponge. Some are more loose and the strands can be all pulled apart as they are used (in a real potscrubbing situation.) Not to say that bacteria won't grow on virtually anything (well almost..) but do members have any thoughts on better/worse material? Not a topic we can get very far with, I'm afraid...
~~waterdrop~~