Right i have a 30l tank that is currently for live bearer fry, and there are a few things i want but i dont know which too do..... so place a vote please and explain why.
I voted for the marine nano, mainly because that is what i want to achieve eventually and if you have the oppotunity to do it, then why not.
My other choice would be a cory breeder tank, mainly because i have a really active breeding pair at the moment. But i would suggest trying to breed something a little different than the standard bronze or albino. Perhaps agasizis or trilniatus? Or maybe someone else has other cory favourites?