I'm wanting a little water area for my pixie frog, and I need a canister filter.
I found one, but it's still a little large, because I think it does 150GPH.

It's Eheim's smallest filter.
https://www.amazon.com/EHEIM-Classic...l%2Behiem&th=1

My tank is going to be 40g, and split not 50/50, but have the water area an inch, or two smaller than half.
So the land gets an inch, or two larger than half of the tank.