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First off, here's a pic. I scanned an affected leaf because the res is a little better than my phone (and no EXIF data...) It's only on the older fan leaves and only near the bottom. Eventually they curl along their length, dry to crispy starting at the tips and die. It looks like rust spots...

Hey all, So, I'm growing in soil (pH 6-7) under flourescent tubes and I've got white edges on the leaves. I looked around here, but the only thing similar I could find was either a phosphorus (or magnesium?) deficiency, but that starts from the veins and works outward. This is starting on the...

Full Story +++++++++++++++++++++++++++++++++++++++++++++++++++ Every study like this is another nail in prohibition's coffin. With enough hard evidence and the right leaders, outright prohibition is doomed. Comments ? Thoughts ? Rants ?

Hey all, I'm currently taking about a dozen clones every couple weeks. A few months ago, I was getting about 3/4 of them (or better) to root. Now only about 25% of them are making it to repotting. I'm using all the same materials I was then, just wondering if a mum that's a little over a year...

It's from 1980, but watch the video and try NOT to laugh at the screen..... My favorite bit: "It's MORE toxic to the liver than alcohol" Then read what some of his patients think of him. We really need to have more like him on their side! :bigjoint: I'd love to smoke him up and talk to him...

So this is my first grow as well and I've been learning lots thanks to watching things progress, doing a ton of reading, and of course the wizards here at RIU: you guys rock. I thought I'd give something back... I have to keep a pretty close eye on how much my 'hobby' costs me until my cashflow...

I'm getting to the point where I need to start thinking about an air filter. I figured I'd get some bulk charcoal and some screen and make up a bin with the inlet at the bottom and the outlet at the top so the air has to percolate through the carbon. Plus it ought to be easy to change that way...

I'm about 3-4 weeks in on a single plant in soil. The cotyledons are yellow and the stipules are about 1/8" long now. Judging from the pics on here, it's got the long narrow leaves of a sativa. I'm about to start feeding it now (Thx LudaCris !) and I'm looking for some 20-5-5. I haven't seen...

I'm just getting started so I've got some newb questions. I've looked around the site and gotten many of the answers I've put together a plan and need some experienced opinion now. I'm going to build a grow room in my (unfinished) basement. I'll have 6'X6' of floor space, suspended from about...

Just a wave from the newest new guy. Wicked forum ! I've got loads of questions about my grow room plans but I'm not done reading yet, just figured I'd say hi. Here's my humble start: