I've had excellent results with Brazilian micro sword in a 4wpg, pressurized co2, and fertilized (EI) environment. Very dense growth forming a mat of carpet all over the tank. I've recently pulled up a whole piece of the carpet and sold it, and now am letting it grow out again. I have read that it is a demanding plant, but have not tried it in other conditions. Mine grows to a height of about 12 cm, which is a little taller than I expected.