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darkdestruction420, we crossed but I have another question for you above. I thought reflector hoods wasted lumens from CFLs.

Sockets? Perhaps I used the wrong word. The cord and fixture thing that you screw the ballasted CFL into. The larger ones are referred to as "Mogul" Base Sockets I think. Perhaps I don't need to worry so much about quality, it's just that assembly lines in different places have different...

Thank goodness. That's easier to fix than iron deficiency!

That reminds me of a question. Is it vitamin B6 or B1 (or neither) that is good for starting seedlings?

Regardless, I'd love to know which manufacturer maintains the highest standards and strictest quality control. After all, it is something made of thin glass that can explode and start fires - I'd like to have the best.

It was advice from J. Cervantes' book, " . . . Horticulture: The Indoor/Outdoor Medical Grower's Bible". Since then, I've been reading this form and realizing that Cervantes' 2006 advice on CFLs runs a bit behind what's happening in the world today. Is the 2700K better than the 4100K for...

Sorry people, I forgot to check in with this forum. Not likely. 6.5 is on the acidic end of . . . great! I would have a tough time believing in iron deficiency unless you were looking at a soil pH of >7.2 and then some. You probably are fine judging by the absence of posts for three days...

In terms of reliability, safety and overall quality, which manufacturer stands out as best? If need be, separate out answers for: 1. bulbs, and 2. sockets. I'm a novice looking for information on the Cool White (4100K) CFL bulbs and sockets for them.

Seaghost, thanks for taking the time to reply. As long as you can keep your ducting organized and out of the way, yours sounds like the perfect solution. Shit, my office is 75 degrees and it's like 7 in the morning. I actually never thought of a dual system. The sound of two fans doesn't get...

infinitescrog, that's why I want to pull the coolest air (from the floor) across the HID. purplehazin talking about laminar flow plus Bernoulli's principle makes sense, which is why I still am unsure of where to put the filter in the circuit so that it doesn't compromise the speed and laminar...

Some questions: 1. Where are you time-wise in your flowering cycle? 2. Are you alternating it with nutrients or combining them? 3. Are you doing soil or hydroponics? 4. What kind of molasses are you using and what dilution? 5. Could you describe the current differences (until you get your...

Thanks for the replies. I keep a personal journal with a flow chart connecting up the answers to each and every question that I ask. Just want you to know that I'm using and synthesizing and incorporating everyone's info into my particular situation. It has been enormously helpful and I have...

Sativex is one of the many cannabis tinctures and extracts used in research. As you know, your wife has a serious disease with a global immunomodulatory impairment. It stands to reason that marijuana's ability to gently dampen an overactive immune response would be a good explanation for the...

Any other physicists about? How tight is the seal going from left to right (or whatever) across the hooded bulb from the intake ducting to the exhaust ducting?

Has anyone here or elsewhere tried a side by side test of whether the vaunted 430W HPS bulbs truly make a difference. Philips Son Agro and Eye Hortilux Super HPS Enhanced Spectrum are the two best selling. The only info I've seen is from the hour long 4-part High Times video on indoor grows...

Actually, Hydrofarm makes a 430W ballast: http://www.hydrofarm.com/pb_detail.php?itemid=3499 Medi 1, you are right. A better question is whether it matters. I haven't seen a well controlled side by side study to see if vegetative growth is enhanced and internodal distance is decreased - more...

mcpurple, thanks for the tip. For the sake of avoiding trauma to the plant, once I start with a given (good) nutrient system, I don't intend to change. Let me ask the community. Between: 1. Jack's Classic Dynamic Duo and 2. FloraNova Grow & Bloom, do people have a clear preference?

long shot, but iron deficiency (common if pH is too high, or "alkaline") is a thought. Is pH of your soil much over 7.0?

Is one green, the other bottle fuchsia? If I found it (over at General Hydroponics), they changed the name to FloraNova Grow. Man, I love simplicity. I'm guessin' that you wouldn't be mentioning it if it wasn't a top product. Any downside? Anything missing? Make sure I got the name right...

myxedup, I'm the mixed-up one here. IAm5stoned, is a 430W bulb in the 400W ballast still augmenting the blue area of the spectrum as it was designed to do? Alternatively, is anything above 400W from the ballast a reflection of its inefficiency i.e. heat, inaccessible to the 430W bulb? Would...