yan402answered grow question 4mo ago Hey growmie, used to run a 600W HPS in a 1x1m, and it was dialed, great balance of power, coverage, and efficiency. For a 2x2m space, though, two 600W lights might be a bit underpowered. That gives you around 300W per m², which is on the low end for flowering under HPS.
If you're aiming for full, even coverage and dense buds across the whole tent, you’d really want:
3 x 600W for solid results
Or even 4 x 600W to hit that sweet 600W/m² zone HPS loves
Two can still work if you keep the canopy tight and centered, use reflective walls well, and don’t expect the edges to bulk up like the middle.
Hope that helps a bit 🤞🍀♥️