Filter for my shrimp tank ?

Howdy! I'm still a beginner and was wondering if my 2.5 gallon cherry shrimp tank really needs its sponge filter?
I wanna remove it for 1. I honestly just like the idea of a filterless tank in general, and 2. I wanted to move it to my bettas tank as I'll be upgrading his from a 5.5g to a 10g (If I can't move over my shrimps sponge filter, I will absolutely buy another/bigger filter for my betta).

It is possible to keep the shrimp without a filter, but its more work.
You would need to carefull keep the amount of shrimp low, carefull clean, be carefull not to overfeed, The live plants will help,but you should have an air pump of some type no matter what, so it seems silly to me to remove a sponge filter and add an air stone or bubble wand.

I have a 5.5 gallon shrimp tank that's been doing fine without any mechanical filtration or water movement for a number of years (it has also had fish in it several times, but none currently), so it can definitely be done. However, the smaller tank will make it more difficult.

If you want to try it anyway I would strongly recommend waiting until live plants take up a much larger portion of the tank space.