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you can easily add one with the separately available PM2 Salinity Module
HYDROS devices are utilizing an entirely new way to measure parameters
You want to expose as much of the sensor as possible for maximum protection
preventing potential damage and loss
the reagent kit will last approximately 2-months before a new reagent is required
Trident NP Nitrate & Phosphate Tester (Without Reagents) filter you can easily add oneAutomated Nitrate and Phosphate Testing is Here! Reagents Store Neatly Inside the Trident Test Nitrate and Phosphate Automatically Once Per Day Compatible with A3 Apex (Apex Pro, Apex, Apex Jr.) or A2 Apex (Apex, Apex EL) Designed and Assembled in the USA Imagine a world where manual nitrate and phosphate tests are no longer apart of your aquarium maintenance routine. Now you don't have to imagine! The Trident NP is the latest innovation from Neptune
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