I have a little 5 gallon tank which is sitting empty in my kitchen. I'm tempted to set it up with loads of plants and a betta male. As it stands, I'll need a new filter (old one was too noisy) and a heater and light. Any suggestions please as to which plants to get, which heater/filter/light (bearing in mind I don't want to spend a lot of money). I already have 2 aquariums (28g + 66g) but I'm feeling its a waste having this little tank empty!