
The Mastertronic Essential is a fully automated water testing device designed for saltwater aquariums that measures five essential parameters: alkalinity (dKH), calcium, magnesium, nitrate, and phosphate. This all-in-one tester automates the process of dosing your reef tank with precision, eliminating the need for multiple test kits or separate units. It uses high-precision colorimetric testing and includes a state-of-the-art photosensor to ensure accurate readings every time. The Focustronic All in One App allows you to control and monitor your tester wirelessly, providing detailed insights into water quality trends.
| SKU | 255772 |
| Aquarium Type | Saltwater |
| Test Parameter | Alkalinity, Calcium, Magnesium, Nitrate, Phosphate |
Price History
Mastertronic Essential Automated Water Tester Alk Cal Mag PO4 NO3
by Focustronic
Test Kits
Reference reading: Species guide on Codexery
Species guides on Codexery
- Duncan coral — Scientific name: Duncanopsammia axifuga · Maximum size: Polyp diameter 2–3 cm; corallite diameter 10–14 mm source
- Torch coral — Scientific name: Euphyllia glabrescens · Family: Euphylliidae source
1 retailer · 1 in stock
Compare Prices
Prices and availability change; we are not paid by these stores.
Active Deals
15% off Mastertronic Essential Automated Water Tester (Alk/Cal/Mag/PO4/NO3)
On sale for $1274.99 (regular $1499.99)
All-time low price on Mastertronic Essential Automated Water Tester (Alk/Cal/Mag/PO4/NO3)
New lowest price: $1274.99 (previous low: $1499.99)
15% price drop on Mastertronic Essential Automated Water Tester (Alk/Cal/Mag/PO4/NO3)
Price dropped from $1499.99 to $1274.99















