Micranthemum callitrichoides ´Cuba´Micranthemum callitrichoides Cuba is one of the smallest aquarium plants in the world, and creeps over the bottom with millimetre sized, round leaves. Micranthemum callitrichoides is an attractive and popular foreground plant for small aquariums. It is not a difficult plant, but it requires good conditions such as enough light, added CO2, water circulation and fertilizer to thrive. If these conditions are hard to create, you may use Micranthemum Monte