aokashi - it'd be cool if we get a plant ID on that floating weed - State laws also restrict some plants.. it'd be best to check before I hassle you for some of that! I'd be happy to send you some $ by paypal to cover postage, if it's all a-okay. That lotus is stunning, by the way! We had them wild on our duck pond when I was a kid, white ones.. they were considered a pest.
But I loved them.
Nice to be here, Sarah! I'm excited about it, too. I'm hoping a few more Melbourne folks hop in. It'd be great to know some more locals. And susswasstertang (freshwater 'seaweed') also tolerates low light. Mine's going nuts in the dingiest corners of Cleo's (possibly slighty over-planted atm) tank. Just tie it gently in a bunch so it doesn't break up all over the tank.. Java moss has been proven to lower ammonia levels by a bit, best stuff ever for low light.. You might consider a few small LED lamps if you wanted plants though.. I use the ones that came with my Dymax tanks, 6500K LED, they screw-clamp to the sump section at the back. You can get strips as well.. I'm finding them good for small tanks, the plants are thriving. Cost about $12-15.
Welcome, amynuss! Nice to meet you. My best advice as a fellow noob is: don't panic! lol. It all seems very overwhelming at first.. If you buy plants from the LFS/pet store, be aware that quite a few are not actually aquatic plants.. they'll eventually die and rot, submerged. Good ones for betta tanks (worth the hideous cost of shop prices) are java moss and wisteria. Depends on your set-up, as to which plants will suit.. whether you have lights/natural light/temps/etc. Maybe there's some people local to you on here who could post a few..