Planted Tank Guru
Join Date: Jul 2008
Location: East Lansing, MI, USA
I use twenty four no-name 3 watt LED emitters driven at 670 mA on my 75g tank. Plant growth is in my opinion, excellent. It hangs about five inches above the tank rim.
It's an even mix of White and Warm White which (in this case) translates to about 10,000k and 6500k.