The Macleay River Turtle (Emydura macquarii) would be the smallest, commonest available turtle in Australia - female adults largest size is 17cm and males largest is 16cm with most being around the 14 cm to 15 cm mark. Next is probably the North-west Red-faced Turtle (emydura australis), maximum size around 18cm to 20 cm as known to date. Being relatively new they may be hard to get a hold of.
Craig and Gab run the Australian Freshwater Turtle Conservation and Research Association (AFTCRA) and be contacted at
Welcome to X-Cart store! . They also run the following forum with highly knowledgeable people happy to help you out.
Australian Freshwater Turtles . They have produced an awesome care sheet available at
Australian Freshwater Turtles.
Water quality is critical for most turtles, more so for some than others. A large volume of water per turtle will certainly help but there a couple off important things besides. A good biological filter with a reasonably high turnover rate. Aquatic plants, such as vallis (Vallisneria spp) are an excellent way to maintain water quality. The turtles don’t tend to eat vallis, so when it starts to take over just rip half of it out and put on the compost heap. And calgrit to avoid shell rot. Exposure to natural sunlight a couple of days a week for an hour or so is highly recommended to keep them in tip top shape.
I have a few thoughts on how to run the Aqua1 hang – on filters so PM me if interested.
Good luck with it,
Blue.