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5 cm (tank only)
The function of this thermostat is far more sophisticated than the simpler on/off switching devices
Unlike liquid fertilizers which dose the water column
Each piece is unique in shape
Due to destabilizing factors (including overfeeding
Amtra Refrectometer Option 1:-- 5 cm (tank only)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
