I am not sure but I am also using a blackstar 500. I have 4 plants in my tent. Check out my grow https://www.rollitup.org/newbie-central/505968-first-grow-blackstar-500-32x32x60.html#post6993311
Thank for the advice thatsmessedup, your setup is very similar to what i will have, i will be following your journal for sure.