Okay, top and tail is my birthday is in February, (the 13th) and I'll be treating myself to one of the optiwhite nanos. This will leave my current 11" cube nano void of purpose but with enough equipment to run it as something or another. Ideally I'd like something really low maintenance and possibly something that will bring in some Â£'s. I quiet fancied trying vampire crabs though I know nothing about them at all. Or even trying to breed some really nice guppies or aspisto or killi's? Any and all suggestions welcome. I can post up tech specs if going planted is a suggestion.