imo it's overpriced. i use shoplights, less lumens per bulb but i can add as many as i want and cover the entire area for way way cheaper. i think using only one of those is not going to veg a big mother plant efficiently but i have never tried, it's just my opinion. for this price you can get many 2ft shoplights daylight bulb and i have used them for years to veg. that said, it will require quite a long time to get 35 clones from a single seed, 8-12weeks maybe. you need to top plant early to produce several shoots.