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Wouldn't this imply that a 250 HID gives you 20% of "usable light" out of those 250 watts (that would be 50w worth of usable light/PAR) and LEDs which give you 100% (yeah, right!) would then give you 1:1 - or in the case of a 28w LED panel 28 watts worth of usable light. So even by their most...

Well, to have a vote or a poll, you'd need relatively few options and a significant number of people voting. There are numerous LED panel suppliers and very few people who use them, so you'd have a hard time drawing any conclusions, let alone statistically significant conclusions, from such a...

It's a good idea but I don't think that would work out too well, anyone can come up here, post a couple pictures of their product and say how well it works. It would just devolve into an advertisement campaign imo.

Doesn't look like any powdery mildew I've ever seen. I wouldn't toss the plants under any circumstances - if nothing else you have the perfect opportunity to find out how to kill this stuff. Though I would just go terminator mode and spray the plants down with a hose as much as possible, repot...

Sure LEDs work, hell - even NASA's used them for growing plants. The question here is really about how a 28w LED panel compares to a 250w HPS in performance and cost-effectiveness. If you have very specific goals such as using the least amount of electricity possible and stuff like that -...

1) Doesn't matter that much, I would give them at least 12 hours of light (18/6 schedule is probably optimal if you actually wanted to grow them) unless you're on a tight budget. 2) Well, not really, if you're going to be repotting you want to water some to settle the soil but you have to...

Open freezer, insert bag of peppers, close freezer. :D I freeze a lot of them, they're fine as long as you use them right after you take them out - either eat them or put them in some food.

28W is 28W, whether 80% of that goes towards light in the appropriate spectrum for growing or 95% does, it's still just 28 Watts and cannot possibly compete with 250w HPS . So you're quite correct in being skeptical, a quick glance at luminous efficacy numbers at wikipedia will tell you there's...

Your friends are obviously jealous that you have such a cool set-up and your family is worried about the electricity bill + the remote chance that if you start growing peppers you might start growing other things - and incidentally one of those things that "grow" is weed. ;) My father had a...

I've never had much success with any of the soap-water, oil-water, water-hose and other home remedies and there's no way of getting hold of ladybugs/lacewing here in EU. Once I bring my peppers indoors and I get any hint of aphid activity at all, I go get one of those pyrethrin-based sprays...

F. produce more heat/less visible light initially, but that extra light from the HID doesn't just magically disappear over time. The average temp in the tent should be the same (more or less), regardless of whether you use a 400w HID or a 400w fluorescent. How much of the radiation is in...

No, hehe, I'll post the pics in one or two days... The peppers were under HPS for two months+. Only 2 weeks after I changed to MH the difference is very noticable and new growth is normal. I also had two plants in the same room under a CFL, just because I was setting up a small space which I...

Well, then maybe that's it. Mine all came from under either CFL or MH, and some from outside. I'll post a pic of one of my plants that were under HPS in a day or two so you can see what I'm talking about, just horrible, thin leaves, more like spears than anything else... Either way I wont be...

In a close-to-perfectly reflective tent it doesn't even matter, ultimately it's going to translate to 400w (or whatever the wattage is) of heat anyway. But there's a huge difference between having a lit torch or a little portable heater in an enclosed space, even though they both produce the...

Idk, Varg, they look nice. It could be the fact that mine went from other light sources to HPS, have you been growing under HPS the entire time? It could be my HPS bulb was particularly sucky.

Really simple setup - a basement room, a reflector hanging from the ceiling and hooked up to a 400w ballast, a 50w oscillating fan. No mylar, no tents, no nothing. The plants are mostly in 2-5 gallon pots/buckets and some have been cut back and are in smaller pots. Right now the light is on a...

HPS bulbs suck for peppers - at least in my experience. You don't need it for the plants to keep producing, MH does the trick. I currently have about 60 pepper plants (1 year old+) under one 400w MH bulb and they're doing fine and producing peppers just fine - probably not as many of them as...

I tried HPS, but - at least for peppers, it sucks. They didn't grow well and because of the spectrum of the HPS lights, the leaves get very narrow and look unnatural - you're not going to get nice bushy plants with big dark-green leaves. If there is any benefit from HPS for flowering...

Seedlings don't "need" to be on a heating pad at all - but they certainly don't need to be there after germination. As per your other question, I don't discard plants unless there's something wrong with them. Some of my best plants were slow starters. :)

It just happens sometimes with chilis, I can give you multiple potential reasons, but mostly it just goes away with new leaves so I wouldn't worry about it.