CO? Diffuser - 3 in 1<br />It is practical diffusers available，3 function in one unit: CO? Bubble counter， Elbow and Refining the atomizer.<br />Produces bubbles as small as a mist of CO?， generating maximum possible diffusion on CO? in the aquarium.<br />Undisputable quality and reliability.<br />Easy to install.<br /><br />Size: approx 37.2mm*26.4mm<br />Thickness: approx 6mm(as the picture shown)<br />Material:Glass<br /><br />Package included:<br />1 X CO? Diffuser