LED Grow Light Comparison Test Review: Kessil v. California Light Works v. ProSource v. Haight Solid State > Read more Tags: California Light Works Haight Solid State PPF-800Rv2 H350 Kessil LED LED Grow Light ProSource SolarFlare Categories: LEDs Comparison Tests Time: 4 Minute Read Date: Jun 29, 2012 Author: Staff @Growershouse