perbandingan lampu(PAR in various Light and distance)

[postlink]https://depokhamster.blogspot.com/2014/01/perbandingan-lampupar-in-various-light.html[/postlink]langsung pake gambar aja yah :)
lengkap dengan grafik :)

http://www.plantedtank.net/forums/showthread.php?t=105774

http://www.plantedtank.net/forums/showthread.php?t=168441