Just to clarify the OP is considering buying one 400 watt HPS for a 2'x4'x5' tent.
Those are all good reasons to switch to a more compactly designed more efficient source of lighting.
How long do you think you would have used HPS if you had a larger extraction fan and were able to keep your temperature in a more desirable range?
You want me to keep it real? I love good conversation. Had I been able to manage my temps from HPS, I woulda said you’re fucking crazy to say there’s better out there cuz man that thing produced I won’t deny that.
on the contray, my LEDS run ice cold, power bill is literally half what it was for same watts, and it’s “new school”
I’ll never shoot down HPS to anyone. They fucking WORK. But. If you’re wanting/needing to be more efficient, new tech LEDS are quite nice lights in the long run.
rock on man. Awesome question. I’ve had about ten runs I guess and am just now dialing my QBs in. Top 3 runs one of which came from HPS. I almost want to run 300 w HPS and 300w LED. That HPS feels like a “sun” the LEDS feeling like new school “bonus”.