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SOIL: A fridnd of mine is having a problem. See pics below The problem is charachterized by multiple symptoms; primarily necrotic lesions (dark spots, dead spots) on the leaves, by some burning of leaf tissue and entire leaves, but also by some leaves appearing too light in color. It looks...

Did that get your attention? Sorry no naked pics here, just plant problems. So I've been doing this for a while, and this is my 4th run of these Diesel Ryder autoflowering plants from dope-seeds.com through Low Ryder seeds. I have never run into any problems until now. I really need some help...

So I got 10 dieselryder seeds. I lost 1 seed somehow into the carpet then two didn't germinate and one mysteriously died. I was left with six healthy plants. My objective was to do a seed run so that I wouldn't need to buy any more seeds since, from what I understand, it's really not worth...

The center of the new leaves dont look good - yellow and kind of wrinkled looking. I'm seeing some of the tips looking like they are curling/dying too. This just happened in the 3-4 days after I transplanted these from the bubbler (where they were started from seed, it's white widow from...

Is it necessary to wash / rinse hydroton before you use it? This stuff seems kind of dusty... or is this just a bunch of effort for nothing?

I live in the central US - these took exactly a week to reach me from the NL.

I cannot find anyone who sells Envirolites and reflectors in the states. They are all over in the UK; anyone have any leads?

I see a lot of bulb manufacturers out there for halide and sodium and other bulbs, all with slightly different properties. Any favorites? Eye Hortilux, Philips, Osram, Sylvania, Lumenarc, Sunmaster... all claim to be the best!

Does anyone have any recommendations on best reading for hydroponics? How 'bout best pot grow books?

I am sure that this has been covered on some level here, and I have searched, but I am having a hard time finding any concise detail on exactly how hot HPS ligts are... how much heat to they generate and how far from your plants do need to keep them? (I mean, I know, keep them as close as...

Anyone ever hear of someone getting busted because they orderd a shit load of hydroponics and lighting equipment from ebay and online stores and the delivery UPS guy or whatever tipped the cops off?

I posted a longer version of this in the thread with the power calc spreadsheet, but that thread I think has gone stagnant; I know double-posting is frowned upon so I pared this down a little bit: (I will remove my post in the other thread if asked) I know there are some very knowledgeable and...

I see a lot of posts referring to using the compact fluorescent lights for propagaion and am wondering if there is a reason for using them rather than the high output fluorescents, besides the obvious space considerations. Is there any fundamental difference between the two types of lights...