My first attempt with my new 600w HPS with spectrum-enhanced bulb. I have a 8" can fan exhausting air out of a 6'(w) x 6(l)' x 7.5'(h) room, but my temperature is still in the upper 80's. My new plants are doopy and have brown spots randomly in the leaves, which I think is heat burn. The 600w is generating a ton of heat and since I live in a warm climate, my AC is running continuously.

I know I could get a cool tube and exhaust the light's heat into the attic, but I have my doubts whether this will work. Is there anything else I can do?

Does a 400w produce significantly less heat? At this point, I'll suck it up and buy a 400w if I have to.

Thanks in advance for any comments or suggestions.

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Our vibrations were getting nasty. But why? Was there no communication in this car? Had we deteriorated to the level of dumb beasts?