Hi guys! I think I'll start a few small tanks (<60 l ) soon. They will be planted low-tech tanks with lots of wood and low-light plants. Since my tap water is quite hard, I plan on getting a RO filter, so I can control the water parameters easily. Do you have any ideas on the stocking? I'm looking for species with interesting behavior and/or unusual shapes. I already have some ideas in mind, but I'm looking forward to get suggestion from you guys.