Ultra Sun
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Ultra Sun Ultra Sun MH 400w 4,200K
A 400 watt metal halide (MH) grow lamp from Ultra Sun, a Hydrofarm brand, with a 4,200 K color temperature. Metal halide light leans toward the blue end of the spectrum, which is why growers have long used it for the vegetative stage.Good to know Run it on a ballast rated for 400 W metal halide lamps. Let the lamp cool before handling, and don't touch the glass with bare hands.
$40.99 $36.89
