C_VLED value incorrect in the case of the Fluorometer
The capacitance C_VLED and the supply voltage to power the LEDs needs to be properly calculated. While for the IR LED used for the turbidity sensor the Forward Voltage for the IR LED SFH 4718A is low (about 1.5 V @ 150mA), for the Luxeon Rebel Blue LED LXML-PR01-0500 the Forward Voltage is much higher (about 2.7V @150mA). Solving the C_VLED equation (datasheet p.33) with the values for the blue LED and the 3.3V power source actually used, it gives a infinite value of capacitance ...
This issue could be solved by using a 5V power supply for the LED instead of the 3.3V, keeping the 1µF C_VLED already installed.