HCA: Hermit Crab Association

I have been using a filter off of Amazon for my fresh water pool but it is really crappy. Are there any go to brands that work in 2 (ish) gallon fresh water pools?
I also want to get a filter for my salt water pool along with the air stones but most fresh water filters can't be used in salt water. So does anyone have a go to salt water filter as well?
Thank you!

I’ve had good luck with Intex filters. They’re solid and work well for smaller pools around 2 gallons. For your salt water pool, definitely check out Hayward or Pentair. I had a bad experience with a filter that wasn’t designed for salt water, so I’d stick to ones made for it.

Thank you so much!!
This really helps!