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Power consumption using LED:s can be even further reduced by adjusting the voltage as accurately as possible. For red LED:s the voltage should be very close to 2 volts and for blue ones about 3.4 volts. If the LEDs have been installed in parallel this is these are the voltages one should feed...

First of all: "penetration" is something you should simply forget all about. Let's see why you have come to this false conclusion. You must have seen a blue-red lighting and noticed that there is no light underneath, right? Why? Because the foliage has absorbed the useful components and there...