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Its been 10 weeks. Is it ready yet? I just found out that my water ph is 8.7 so this may be why it is taking so long.

About two weeks ago, my fan leaves started turning yellow. Not from the tips exactly just yellowing in general. I hoped I just hadn't been feeding enough N so I gave them a nice big dose about a week ago. The buds are still a nice gark green but the further you get away from them the more yellow...

So my main question is will there be problems with the 600 hps. I'm pretty sure I can sufficiently vent the heat, its only like 5 bucks a month more, and I want to upgrade someday so I really have my heart set on the 600w. Is this way overkill or will I see benefits as well as problems.

do photons loose energy as they travel through air or do they just get spread out?

This is somewhat a science question and a horticulture question rolled up in one. I have a 2x4x7 Mylar grow tent. This tent supposedly reflects 95% of light. Now it seams like this would have a huge effect on how much usable light my plants receive but I just posted a similar thread (I guess it...

I know this has been asked and I have read many of the responses but I have a new angle I think. I know HPS is better for flowering.It seems to be a fact from what Ive read but I have heard that MH may be slightly superior when it comes to bud quality. So my question. I have a 2x4 tent with a...

Hi all I just bought a 2X4 Mylar tent and was wondering if the distance from the light to my plants will have much of an effect on the lumen count. The way I understand it, people want to put the lights as close as possible because the light is comming from a point source and the further the...