TheKraken Well-known member Joined Apr 13, 2010 Messages 331 Location Edmonds Sep 27, 2010 #41 NC2WA said: Who is the GSAS ? Click to expand... Your friendly freshwater club (GSAS.org) We hosted Tom Barr whom is very specific in measuring PAR levels in planted aquariums as an alternative to watt/gal and all the other strange conventions used.
NC2WA said: Who is the GSAS ? Click to expand... Your friendly freshwater club (GSAS.org) We hosted Tom Barr whom is very specific in measuring PAR levels in planted aquariums as an alternative to watt/gal and all the other strange conventions used.
