GrowCNanswered grow question 4 years ago What is your budget?
I also use a 1m tent. I run two Horticultural Lighting Group 260 QB V2 RSpec lights. I you don't want to assemble it yourself I would get two of their HLG300 or one HLG 600 RSpec. One 260/300 watt light is marginal for the area so I run two lights at reduced power. With two fixtures the light is emitted from a large area so shadowing is minimized and I get better light penetration to the lower leaves. Light from a very large area also doesn't create a hot spot in the middle and I get a much larger area of prime, high powered light instead of a little spot in the middle. And, should one light fail I can crank up the other light to full power and get by until I repair the broken light.
During veg I usually only run one light at low power. Then as I near the end of veg I'll turn on the other light at low power. Then in flower I'll have both lights at medium+ power. Simply saying "hang your light 30cm high" is inaccurate so I use an app on my phone to measure the light at the top of the plants. This makes it easy to adjust EITHER height or power to get the illumination I want.