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8 cm (LED set)
The function of this thermostat is far more sophisticated than the simpler on/off switching devices
Due to destabilizing factors (including overfeeding
Does not retain hair and impurities
Unlike liquid fertilizers which dose the water column
Amtra Refrectometer Option 1:-- 8 cm (LED set)AMTRA LED OPTICAL REFRACTOMETER optical refractometer for measuring salinity in the marine aquarium with integrated LED Features: Practical optical refractometer for measuring salinity in a marine aquarium equipped with LEDs for better reading of values and with automatic temperature compensation (ATC) Thanks to the supplied LED, you can comfortably read the measured value in any external light situation Possibility of re calibration Integrated
US$ 13.99
US$ 27.99
US$ 11.99
US$ 18.00
