4/6mm Tubing 25m

The tubing fits perfectly on standard air stone connectors and stays flexible without kinking. Even with my long air line run to the far side of the tank, I had more than enough length left over.

The 25-meter roll is a great deal for the price, and I love that it's clear so I can easily see if any water or gunk gets in the line. The 4/6mm size fits my air stones perfectly and it's soft enough to bend around corners without kinking.

Was pleasantly surprised this 25m roll fits perfectly for my two-tank setup. The 4/6mm clear tubing is stiff enough to stay in place without kinking. Gave my air stones a much cleaner look than the old rigid line.