Spider Farmer GlowR40 40W Deep Red Spectrum Supplemental LED Grow LightThe Spider Farmer GlowR40 Deep Red Spectrum Supplemental LED Grow Light is a 40W (20W per bar, 2 bars included) fixture designed to enhance the flowering and fruiting stages of indoor plants. It delivers a concentrated Deep Red 650 665nm spectrum, which is scientifically proven to stimulate photosynthesis and increase final yields. This model is engineered to complement smaller scale grow setups, as it is specifically recommended for use with main