Plenty of room. =) go for the 400 watt hps and see about getting a really nice bulb.

There are a few 'enhanced spectrum' flowering bulbs that will help out with your lack of spectrum. Also, between the 2000-2200k range, I don't believe there will be much difference at all.

But, by some theories, including that 660nm red spectrum produces resin most efficiently. I'd go with the 2000k.

But as I said, I don't believe there will be much difference if you were to go with the 2200k. As a suggestion, I'd go with an enhanced type.

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BeFree Reviewed by BeFree on . Is there a difference? HPS of 2000k , 2100K or 2200 K? Hi, Everyone Thanks for reading my questions. I'm buying a HPS light bulb after using a 150w HQI to flower for one and a half weeks. After reading threads on HQI and HPS, I've come to realize that it does make a difference between the two. Thanks for those who contributed to this topic and I really read that part. Unfortunately, the only kind of HPS light bulbs I could purchase near my town which all have the color temperature of 2000 K. I then Rating: 5