Thanks so much for the replies and the welcomes :)

I actually looked up some info last night on our Peppermints only to find the "Aussie" Peppermints don't match exactly to any of the L numbers. That while they are young they have the white stripe on their tails, but apparently this disappears ...

Hi everyone,
I have been reading a few posts and feel rather out of my depth already :-\

I have to say, we only brought our fishtank about 4 weeks ago and looking into what we should have done, and how we should have done it......we did it all completely wrong yet some how got away with it, so ...