Just grabbed a hyphotonflux hpf400 off eBay new but open box for $120 with shipping. I guess was reading about it and it's the cheaper model comes with no uv bars.....do I really need to purchase some? Putting in a 4x4 currently have a HLG 200 and Vipar 200
Is it more of a sales gimmick? Im assuming the light itself comes ready to grow some nice buds...just wondering what the difference would be if I got a couple supplemental bars