Just registered in earnest, been lurking (researching) for over a year. Of all the online info, I've found this group to be the most consistently reliable, go-to source for any of the Q's I've had rattling in my brain. My tanks are small, over filtered at least 2-3x's more than recommended, currently stable... Knock on wood! After a flooring renovation, there will be a large showcase tank added before the end of the year. Meanwhile, I'm off to ask a question I haven't found an answer for yet!