Bubble Wands create a beautiful decorative effect. A curtain of bubbles at the rear of your aquarium improves water circulation and oxygen exchange at the surface. A shimmering flow of bubbles for ANY aquarium. Convenient, flexible wands bend to fit any space (behind rocks, around decorations, etc.) improving circulation and oxygenation. Weighted design ensures "stay-put" placement - wand won't float to surface. No unsightly suction cups necessary. Includes anti-siphon valve for trouble-free operation.