I was brave and ordered for my nature pond underwater plants. The plant arrived in 1a condition here, absolutely amazing. I have immediately planted in my pond to clean with the task of the water. Exactly they have made. After 10 days, the mud has geklummpt, now I have super clear water throughout the pond. No seaweed, neither green nor brown. It is a true friends. No more water lily or goldfish. Now I can see newts and moderlieschen again. ... And all without chemicals. Thank waterweed.