GloFish® Red Algae Plant changes colors, adding a brilliant accent to your GloFish aquarium. Looks great with white LED lights or use with GloFish blue LED lighting (sold separately) for the full fluorescent effect. Delightfully detailed and brightly colored, GloFish plants provide an intriguing world for curious fish to explore and offer your GloFish fluorescent fish an ideal hiding place. These plants come in an array of colors, shapes and sizes, allowing for easy customization. Just set the weighted base into sand or gravel.