(Unknown Title)

Could save some electricity charge if the power supply fancy LED lights are kept off.

All those LED lights spend less than a 1% of electricity involved, in fact real number is probably even < 0.1%. Next to nothing would be gained by turning them off.

I prefer LED turned off as each LED is about 1 watt and the total farm would take 20-30 watts which is still a burden when it come to ROI...

1 watt LEDs are what goes into flashlights, the really bright ones. Those colored LEDs are under 100mW.

Exactly. People are throwing figures left and right here. All those LED's on the picture spend $0.2 - $0.5 / month. Calculate the consumption of all the power supplies on the picture and you'll see that my estimation of LED's spending < 0.1% of all that electricity has to be correct.