Extend the tubing through the water to reach the Sontek Sensor.

Attach the tubing to the steel strut channel using a band clamp, and compress it until the tubing is secure but open.

Do not compress the tube too much because it can make the sampler work too hard.

Bring the tubing to the bottom of the stream bed by covering it in rocks without compressing the tubing so much that water could not pump through.

Could also potentially secure it down with hardware to the stream bed.