Although I realise that not all stores and their staff are the same, I've quickly come to see that my local LFS is just that, a fish store - I'll come here for the advice. When I first started out, I asked one guy about fishless cycling and he hadn't got a clue what i was talking about and actually walked off mid-conversation. Unfortunately, they're the only one local to me, so I had to go back. Since then I've been told that the minimum size tank required for Silver (Bala) Sharks is 2 and a half feet and that brown algae is toxic.