Note: during transit some plant roots will be damaged. Don't worry about this place plants in your tank, and roots will appear within 7-14 days. This plant is Not suitable for ponds. Propagation by runners. Do not let plant completely cover the surface else other submersed plants will get shaded. Removes Nitrogenous Wastes. Roots like these suck nitrogen and other digested fish wastes out of the water. They help purify the water. Attractive, easy to raise, and economical. If you're looking for a surface plant that also reduces the excess light that encourages algae growth, you'll appreciate dwarf water lettuce even more. This is beautiful floating plant can be used indoor or outdoor aquariums and vivariums. Shrimp may often hang below the leaves on the roots. Plant also provides shelter for fish. You are buying 14 (~2-4cm) young water lettuce plants. The picture is an example.