Just know that pygmy cories are somewhat fragile. I'm down to 6 out of about 15. 
If you're going for pygmies, wait till your tank is established, and then keep up with the water changes. Cories are awesome! 
__________________ 29 gallon
Under Construction 20 gallon Flora: Anubias Nana, Microsword Fauna: None yet, starting to cycle 15 gallon Flora: Microsword, Java Moss Fauna: 10 Neon Tetra, 1 Dwarf Gourami (f), 1 Betta (f), 1 Mystery Snail 10 gallon Flora: Java Moss, HC, Dwarf Sag Fauna: 1 Guppy (f), 2 Peppered Cory, 2 Pygmy Cory, 2 Amano Shrimp, Ghost Shrimp, Red Cherry Shrimp 5 gallon Flora: Java Moss, Dwarf Hairgrass Fauna: None |