The Planted Tank Forum - View Single Post - Testing out some 10W Chinese LEDS
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Old 10-06-2012, 01:10 PM   #213
csf
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Two options here that are simple/easy.

Run two fans in series. You'll end up with about 6V across each if you have 12V main rails.

Or stick a small resistor in series with one fan.

http://www.blackfiveservices.co.uk/fanspeed.shtml

Keep an eye on the heat sink temps as you drop fan speeds to find the right balance.

Also clean your fan - dusty, caked fan blades are noisy.

Quote:
Originally Posted by Adkins.its View Post
Did you use a separate power supply for your fans or did you run them of your drivers and regulate them some how?
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