I have used A hps 250 W for years, wich i was starting at 70cm now with the sf2000 200w i start @80cm @50% for the first week and half then switch to 75% for 2 to 3 weeks then 100%, i don't move the lamp until the plants are 20 25cm from it.
What size tent is that? How is the SF2000 working for you? I have one over my 2 X 3 ft ebb & flow and I like it
Same 2x3x6 tent, and aside veg is a little slower with the LED than with the HPS i m happy too with the SF2000
