NEPTUNE SYSTEMS APEX FMM OPTICAL LEVEL SENSOR V2 (OS-1) Hanna Instruments Meets corals’ complete nutritional requirements

Meets corals’ complete nutritional requirements

but it gets much closer than almost any LED available today

per gallon in a 24 hour period

And unlike many wimpy pumps out there

mount the blocks in air

NEPTUNE SYSTEMS APEX FMM OPTICAL LEVEL SENSOR V2 (OS-1) Hanna Instruments Meets corals’ complete nutritional requirementsOptical Level Sensor (OS 1) This sensor plugs into your FMM and, using reflected infrared light, will signal your Apex when it changes state from being wet to dry or dry to wet. This sensor can be used for constructing your own ATO (auto top off), as a high level warning sensor in your sump, water storage level sensor, and much more. The sensors can be mounted into custom brackets or through a hole in a vessel. Included are a fastening nut and