Update: I added 12 cardinal tetras to the 36.7gal aquarium earlier today. I decided to try and keep them again with the pygmy cories. They are at one side of the tank at the moment but they are settling. Pictures coming soon.
I did a water change today on the silvertip tank. Yesterday, I was able to remove the fry saver and the adults finally have more space to swim. The right side probably needs more plants and I'm still dealing with the snail headache every once in a while. The silvertips have now been breeding...