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Read Return PolicyI am growing with LEDs and quite happily but don't get sucked in by the hype. Not even top brand (Cree, Philips) top bin LEDs can match a watt HID with 305 watts. My guess would be something in the range of twice that in wattage would be about equal....if you are using at least excellent quality. As others have noted, multiple sources are much better than one. You have to get out of the HID point of light mindset. LED is more like T5 than HID in that it really only works well on what it directly covers/there isn't a lot of spread.
I'm using Kessil H350 magentas at more than 80 watts each. That would be real watts. Please note that many/most companies are giving you a theoretical rating for the LED which their driver, heat sink, etc are not even capable of performing. You want to know actual wattage draw. I've got a spectral spinner (circular light mover) so that there is better coverage of the light. I'm using fluorescent side lighting now but have parts on the way to me to build some hefty LED side lights...Cree warm and cool white. I'm also playing with the idea of building a few small fixtures to hang on the spinner to tailor the light to different times of the grow. For example, one fixture of royal blue and the second fixture (must balance the spinner) at the same time could be neutral white to fill in spectrum from the H350s which are just red and blue for veg and then mid veg maybe go to two neutral white fixtures and then late flower pull a neutral white and replace with a 660nm fixture.
I'm at the 4th week of flower right now with some Purple Urkle, and the flowers are just thick with trichs and developing well...the main colas almost look like they are getting hash tips. There's a few weeks to go but this grow looks awesome so far.
Growershouse.com has several different brands of quality LEDS (including Kessil) and they have a sale so take a look and maybe talk with them too.
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