Mumma.of.two
Aquarium Advice Obsessed
My sister had a 2nd hand octagonal tank that she passed onto me, with her betta, when she moved across country. It's about 10 - 12L (2.5g). He didn't have a heater or a filter. As soon as I got him I got him a heater. But he still needed a filter. I've been changing out his water every few days for months now. Because of the size of the tank I don't want to use a sponge filter (would take up too much room). We are a bit tight on cash at the moment so buying one was out of the question. I decided to make my own HOB.
This is how it looks:
This is how it looks: