Marineland PA0524F Flexible Bubble Wand with Anti-siphon Valve, 24-Inch by MarineLand. $6.78. No unsightly suction cups necessary. Includes anti-siphon valve for trouble-free operation. Weighted design ensures -Inchstay-put-Inch placement - wand won&#x27;t float to surface. A shimmering flow of bubbles for any aquarium. Convenient, flexible wands bend to fit any space â€“ behind rocks, around decorations, etc. â€“ improving circulation and oxygenation.