One of the rarest of all the Crypts, Cryptocoryne amicorum is a cultivar plant that has bladed leaves that can come in a range of colours from brown to green and sometimes even a shade of purple. As with all Crypts not much light is needed, CO2 isn't essential but growth will be highlighted with CO2 rather than without it.
Understanding Crypt melt - all Cryptocoryne species require stable water parameter and light conditions. Once planted, Crypts should not be moved otherwise it can trigger what is called Crypt melt. If a Crypt has a significant change of environment (ph, kh , gh, lighting intensity or duration, root disturbance etc), Crypt melt can be triggered. The leaves start to disintegrate as the plant prepares for its new environment - DO NOT WORRY! Your plant will begin to grow back over the next 30 days (sometimes sooner, sometimes later) - it's still very much alive and busy getting ready for the growth of new leaves. In the meantime, any decaying leaves should be trimmed and recycled in a compost bin.