Aquatic Life 460/620nm Purple Marine High Output T5 lamps feature a phosphor mix which produces a light spectrum that accents red pigmentation in live corals. The purple color compliments the blue and white lights traditionally found in marine and reef aquariums. High par values increase the ability of corals to photosynthesize. Mini Bi-pin configuration. Aquatic Life 460/620nm Purple Marine HO-T5 lamps are ideal for: Acroporas (SPS), Anemones, Clams, Hard Corals (LPS), Leathers, Mushrooms, Polyps, Soft Corals, Xenia, and more!