I personally don’t like filtration for them; they’re extremely fragile. Algae is more important anyway, so I don’t have a recommendation there. I bought some algae on eBay though and it’s working wonders
I use this, but any air pump and small air stone would work: https://www.amazon.com/dp/B06XS1DCG6?ref=ppx_pop_mob_ap_share Also, be sure to clamp the tubes so they don’t put out too many bubbles, or you can get a valve system, they are super cheap. Amazon probably has them if you search for adjustable valve control.
Not something you asked about but heating is very important so make sure you get a small heater, they thrive between 75 to 80°F. This is what I use: YukiHalu USB Powered Aquarium... https://www.amazon.com/dp/B09WYBS3FN?ref=ppx_pop_mob_ap_share
Best of luck and have fun they’re so cool to watch grow !!!