Saim Glowing Effect Artificial Lotus Leaves and Flowers Aquarium Ornament Cool glowing effect, realistic lotus flowers are fade-resistant and non-toxic. This aquarium glowing ornament are enhance visual appeal. Safe for fish and good for fresh or salt water environments The Longest Flower Measures about : 5.7"(L), The item measures about : 4.2"(H)X3.9"(L)X2.8"(w) Glowing effect means: Not "Glow In the Dark", it requires aquarium black or blue lighting for the fluorescent glow highlight.