Hi all, I'm trying to make an algae scrubber for my marine aquarium, this needs 5x3W 660nm deep red leds wired in series.
The tech says forward voltage 2.4-2.7v, so would I be right in saying that a 12v 18w driver would be sufficient to power these in series?
Also, what if I use less, say two, three or four leds? Do I need to introduce a resistor to each led, and what about 6 leds, do I need to get a driver that delivers 18 or 24volts?
Many thanks.
The tech says forward voltage 2.4-2.7v, so would I be right in saying that a 12v 18w driver would be sufficient to power these in series?
Also, what if I use less, say two, three or four leds? Do I need to introduce a resistor to each led, and what about 6 leds, do I need to get a driver that delivers 18 or 24volts?
Many thanks.