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I have a 5x4x2.5' grow room constructed out of styrofoam insulation, with three 3" intake fans and three 3" outtake fans. Before spring rolled around I was easily able to control the temps and keep them hovering around 75 degrees, but now with the hotter outside weather (an open window to...

I'm in the market for purchasing either a 250 or 400 W HPS system, though I would like to know of a reliable and affordable site which to order it from. I'm fairly new to this whole scene, and am just looking to get the best setup for the best price. Advice on where to order an HPS lighting...

My problem is that I'm essentially in the dark when it comes to soil and water ph levels, I have two ph testing devices (one is a probe stick from walmart and the other is the liquid with vile tester), but I can never get an accurate and consistent reading from either. first of all, my probe...

I've been thinking about investing in at least one 70 or 100 W HPS, but the issue is that I cannot find any that are rated at 6500K. I've been scouring the internet for a few days now, and all I can locate are 2100K bulbs. So my question is, do hps bulbs come in any thing other than 6500K, and...

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I'll begin stating my setup in order to better explain my setup. Currently I am running 9 individual lights (two 4-foot 6500K fluorescent tubes, three 2-foot 6500K bulbs, four 5-inch 100 watt equivalent cfl's at 5500K), the lights are as close to the plants as possible, with the cfl's being no...

I'm considering growing a couple of plants in the near future, provided opportune space is available to grow, though I have one question concerning lighting. my plan is to use 5 fluorescent bulbs (2 4' bulbs, 3 24" bulbs) as well as 6 26 watt cfl's (100 watt equivalent). My question is...