Aquatic Life TDS Tester Pen Calcium & Alkalinity Relay-switched AC outlets: AC outlets

Relay-switched AC outlets: AC outlets are relay switched and designed for common aquarium equipment control tasks

Sensor diameter: 0

Pair the pump with Mobius if app control is desired

Contains aerobic

40 lb bag is practical for larger aquariums or multi-bag reef builds

Aquatic Life TDS Tester Pen Calcium & Alkalinity Relay-switched AC outlets: AC outletsAquatic Life TDS Tester Pen Aquatic Life TDS Tester Pen is a handheld total dissolved solids meter for quickly checking source water, RO water, RO DI output, aquarium preparation water, and other water quality applications. Aquatic Life TDS Tester Pen for RO DI and Aquarium Water Checks This compact TDS meter helps aquarists monitor how much dissolved material remains in water before and after filtration. It is especially useful for checking tap