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for raised bed best thing is to make your own most trays have short side walls i found that 8in side walls are a must. as of light go @ least 600, 1k is better for 4x4 and 2 1k for 8x4 and only use mh for veg but in raised beds most peope do a sea of green and dont veg for more than a week so unless u want to change bulbs all the time go with hps. i hope this helps.
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