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These linear oil-free air pumps are the most powerful air pumps available in the hydroponics industry. The O2 Max output is 65L per minute (885 GPH @ 3psi)and comes complete with a four gang-valve manifold. Weight: 4 lbs.
Works best with Deep Water Micro-pore air diffusers. DWMPD010 - 060.
Item Number: 131653