After using as a hospial tank. Strip the tank down and steralise everyting.
Just take a sponge, or cut a mature sponge up to fit the filter, when you need it. Add a new sponge back to main tank for it to cycle again.
Just take a sponge, or cut a mature sponge up to fit the filter, when you need it. Add a new sponge back to main tank for it to cycle again.
