Hey everyone

I am just planing the layout of my tree frog tank. I have a water fall and a stream that leads into a pond. I have a water pump to create the waterfall but I am unsure wheather I need a filter as well? Will the pump circulating the water be enough?

I was hoping that I didnt need a filter as it would take a up more space. Any comments would be appreciated as Im planning on starting the floor layout of my tank this weekend.

Thanks everyone