You really need a separate pump and filter kit.

Here's what I have:

https://www.amazon.com/dp/B00NT3KOWE?ref=yo_pop_ma_swf

And:

https://www.tsurumipumpsales.com/tsurumi-50pu2-15s/?m=simple&gclid=CjwKCAiAiuTfBRAaEiwA4itUqOCEBtEWr2Ocf_U2-Rv-9nhIJ806EaG7EmFKgyXFPL4q7KWAPkuX7RoC2IIQAvD_BwE

Plus a waterfall. I also have a separate inline UV but I don't think I need it.

Either way you really do need to oversize to keep the water clear.