Build Thoughts

[Byron]

I will assume the Alkalinity and Hardness numbers are ppm (or mg/l, which is the same) so that means very soft water (25 ppm equates to 1.3 dGH). Soft water species include most of the tetras (mentioned in post #1) and related fish like hatchetfish and pencilfish, most catfish like corydoras, and most of the rasboras, gourami, loaches (smaller species given the tank size). Lots to choose from.

 

[seangee]

That water is ideal for soft water fish as @Byron says. If you want to keep shrimp you will have to do a little research. There are shrimp that are suitable for soft water but many require more minerals for their exoskeleton to grow.