I'm picking up my Osaka 320 tomorrow and I'm looking to set it up over the next couple of weeks. I want a planted biotope (Australian biotope) but don't know how best to go about it. For those who've never seen one, this is an Osaka 320. Spec on the system will be: 320l fluval 405 fluval 205 Life-Glo & Power-Glo T5HO Bulbs CO2 Any help for the following would be greatly appreciated. 1.I am restricted by budget so can't afford to fill the bottom with AS or costly equivalent. What can I use instead? 2. What plants would be best? I want to stay as true as possible to the Australian biotope. I'm thinking of: Foreground - Marsilea hirsuta Background - Vallisneria nana Anything else? Thanks.