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Please note this is not compatible with the PMUP V2 (Orange Base). It must be the PMUP V1, which is all black.

Have you worried about your ATO reservoir running low?

Not only could your return pump start sucking air, but the Apex V1 PMUP cannot be run dry. It can overheat and be permanently damaged without water to cool it.

For that reason, I designed a PMUP stand with optical sensor mount. This is meant to hold the PMUP upright, notify you if your ATO reservoir is low*, and also shut off top off before the PMUP is permanently damaged*.

Setting this up is simple:

Unscrew the strainer from your PMUP, insert the PMUP into the stand.
Screw the PMUP strainer back on (from the bottom).
Insert the optical sensor from the top, and then screw on the sensor's nut.

This is printed in PETG plastic, which to my knowledge and research is totally reef safe and will not degrade.

*These features requires an apex optical sensor, which is NOT INCLUDED. This is just the stand.