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So I made a homemade cooltube about a week ago, and today I decided to move my light closer to the plants. My two temp gauges are registering around 83-86, though I have pretty good air circulation. When I place my hand above the plant canopy, it doesn't feel hot at all. So, should I go with my...

So first of all I made the mistake of placing my baby seedlings directly under my 400 w hps, and I checked them the next day and the top part of the stems were at 45 degree angles with the rest of the stem. Though after I vented the room out they began to stand straight again, my new problem is...

So I woke up this morning and checked my grow room temps, and they were hovering around 87 F. I opened the door and allowed to cool air to come in and cool the place down, though, I think my seedlings are in a bit of trouble. Two of them are bent over and the fan leaves are crumpled, could this...

Well I have my grow box setup in my room, and I also smoke cigarettes in the room. My question is, will the cigarette smoke get ventilated into the grow box and adversely affect my plants growth?

I just installed a 400 w hps in my grow room that is 3x3x 5.8. I have three intake fans located towards the bottom of the room (all 80 mm and one 120 mm), and I also have four outtake fans that are all 80 mm, and my temps hover around 85 F. My light is about 18 inches away from my plants, and...

i just ordered a 400 w hps from htg tonight, and it comes with a 400 w hps bulb that puts out 50,000 lumens. The purchase kinda put me in the whole as far as money is concerned, so my question is, am I able to successfully vegetate and flower in just the hps bulb? Or do I need to spring for a mh...

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...

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...