Hi all! My younger sister is very fond of apistos and wanted to see if we could get a pair for her 10 gallon she is setting up. Are there any apistos or other south American dwarves that would be particularly well suited for this? I would be taking care of the tank and have a good deal of aquarium experience, but my sister would rather not have a full out blackwater tank (we are willing to mix quite a bit of distilled water into our tap to soften it, though...up to 75% distilled). Thanks