Crypt Lucens is a less common type of crypt that can serve as an ideal foreground or midground plant. Â The slender leaves are bright green with brown stems and when grown in large groups can resemble tall reeds of thick grass. Â Like other crypts, this plant is recommended for beginners due to its ease in keeping and low care requirements. Â If grown in good aquarium substrate such as Controsoil, the plant can feed through the roots and grow quickly without the need for high light, CO2 or fertilizer dosing.