Riccia Moss or Riccia Fluitans crystalwort floats on the surface or inhabits moist substrate. Cultivation and care are both easy by attaching cushions to rocks or logs to provide a solid base for them to grow on and trim regularly to keep shape. CO2 supplement increases growth. I portion 5g supplied – NOT shrimp safe. Plants are incubated in a solution of 0.01% of the insecticide Buprafezin for one hour (Please do not just drop these in a shrimp tank or with any other crustacean. To use these within a tank please wash in water with baking soda under light. These are treated to remove the insecticide but there are cases where this has not been fully removed causing casualty’s in crustacean.