3D Apogee Par Sensor Wand New I recommend 2 for each

I recommend 2 for each pump so you can swap out a clean one easily and soak and clean the dirty one so it's ready for next time

Larger diameter than the A200 guard to allow more flow through the intake

Hang on rimless tank wall up to 1/2" thick

Depending on flow speed

3D Apogee Par Sensor Wand New I recommend 2 for each3D printed in reef safe black ABS plastic with acrylic rods. Ball connection allows the base to swivel and adjust the angle of the sensor. Acrylic rods are 12" long. Overall length with both rods attached is approximately 26". Sensor attaches to the base with the black plastic screw supplied with the sensor from the manufacturer. 23. 5mm and 30. 5mm sensors