There is such thing as too much light but you won't know it until a few weeks before harvest.

750w lamps are too rare. Get a 1K because they are so common and cheap. If your plants start to foxtail, raise the light.

You should get a bigger fan, but use a speed controller to bring it down a notch... more performance but with no added noise. You can get them for $15 from Harbor Freight.

So 25 days into flowering with the 1000w Enhanced spectrum HPS.

I couldnt be happier with it. The best part is how much cooler the HPS runs the thousand watt metal halide I had in there was alot hotter.

Just wanted to say thanks for the input.

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I'm interested in how a 1000w would perform in a grow tent that size as opposed to say, a 600w.
How is everything going now? Have you had issues with heat?

No real issues with the heat. The fan I have is venting both rooms and keeping the flower room 75*F

I just smoked the first bit of this harvest tonight and I couldn't be happier.

I still have 5 under the light for another week and found a seed in the cola of one of my plants. IDK if it just went hermie here at the end or what?

Anyway I would deff get as much light as you can afford, you don't want to be at the end and with a 600w and wonder "what if?"

Peace and Ganja

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Check out my grow journal http://www.rollitup.org/grow-journal...or-temple.html I'm climbing high and life is better from way up here!