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The name "660" references the area of the light spectrum produced by this lamp
See dosing chart for target EC mix rates
SUPERthrive Bloom 3-12-6 – Advanced Flowering and Fruiting Plant Nutrient
• Made from premium European materials: 99
Growers Choice GC-315 w/ 3K grow-system/-trays/-reservoirs The name "660" references theGrowers Choice Horticultural Lighting has introduced their first digital 315 watt ceramic metal halide fixture. It utilizes advanced low frequency square wave technology and high efficiency 315 watt ceramic metal halide grow lamp. The GC 315 delivers the highest efficiency and closest spectrum to actual sunlight in the commercial horticultural industry.
