For veg your killing your self using that 600 watter way too much of what you don't need vegging plants don't use too much of the red spectrum and the power bill soooo not worth it for beginners I would always recommend a t5 and don't fill it with just one type of bulb only one or two hortilux bulbs especially my king led is labeled 800w but pulls only about 350 but with led's you need supplementals from different angles there's virtually zero canopy penetration I watched a review where a grower had a "expert" guest and he explained it the best he broke it down led for quality hps is for commercial and stuff looks super drastic under the led you catch virtually anything days earlier than normal it's crazy ! Under the light you'll see a problem and you'll be like OMG it looks terrible then you bring it out in normal light and they're so perfect looking , your like WTF scratching your head ." Where did the burnt tips and that wilted leaf go?"