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Advanced and yet economical: this 2x4 grow lamp uses 960 pieces Samsung LM301B diodes, achieves a maximum yield of up to 2.5 g/W and a higher light output of 1136 μmol/s, but consumes only 300 watts for a coverage of 3 x 5 feet in vegetative or 2 x 4. foot in the blote Full spectrum for all phases: precisely uses a combination of all colours in full cycle growth, this growing lamp provides plants with imitating natural sunlight to produce high-quality crops, the sunlight spectrum includes warm white light 3000K, red light 660nm, white light 5000K DIMMING AND DAISY CHAIN: our LED grow light bar features a dimmable button to control the light intensity from 0% to 100% and also supports a daisy chain to connect up to 60 bulbs simultaneously for large indoor plants or commercial cultivation Safe and stable structure: the 300 watt grow lamp from Mars Hydro comes with a removable driver to avoid safety problems. Aluminum heat sink provides plants with a stable growing environment without overheating Light kits included: improved hooks on both sides for easy hanging. Complete hangers are included to set up the indoor garden system in minutes. It can be conveniently placed vertically or horizontally wherever you like › See more product details