Bluelab Guardian pH / EC Monitor
Bluelab Guardian Monitor
The simplest and most effective reservoir monitor you could ever own!
€329.90
PH and EC Combo Testers
PH and EC meters An electrical conductivity meter (EC meter) measures the electrical conductivity in a solution. Commonly used in hydroponics, aquaculture and freshwater systems to monitor the amount of nutrients, salts or impurities in the water.
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