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Mastertronic Essential Automated Water Tester (Alk/Cal/Mag/PO4/NO3)
The Focustronic Mastertronic Essential is a fully automated water testing device that measures the five most critical reef parameters: alkalinity, calcium, magnesium, nitrate, and phosphate, plus OLI (Organic Level Index), which tracks water yellowness as an indicator of organic load. Using high-precision stepper and DC pumps with a colorimetric photosensor, it runs each parameter on its own schedule and is controlled wirelessly via the Focustronic AIO app with trend tracking. It works with third-party test reagents, needs no central controller, and can trigger automated dosing when paired with compatible Focustronic devices. Test reagents sold separately.
Price: $1,499.99 USD
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