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    Philips Lumiled (China tries to buy)

    Basic gist of the story: a Chinese venture capital firm agrees to buy Philips Lumiled division. I thought this was interesting since Luxeons are good, the Philips lightbulb is around 100-110 L/w. (Considerably better than Cree's 88 L/w). I wondered what the Chinese would do to it if (considering...
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    Another unstable weekend?

    Rollitup seems to be flaking out again this morning? This seems so regular, I'm curious if anyone is considering a new web host provider?
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    COBGrowLights (GrowthStar Spyder)

    Anyone know about these lights? http://www.cobgrowlights.com/products/spider-4x Are they using COBs of repute? Someone's on the General forum talking them up. Seems resistant to come here for more specific discussion. (Starting to sound a little spammy.).
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    Kellogg Palm, Cactus & Citrus potting mix (undiscovered secret?)

    I was at Lowe's yesterday and paused to look at this soil: Kellogg Palm, Cactus & Citrus (All-Purpose Indoor & Outdoor Potting Mix). This stuff looks like ideal soil to me. Zero nutrients, sandy. The texture looks right. It has zero peat. Just holding a handful of it it feels right. I'm...
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    Bagseed & MiracleGro Tomato ("the cheapsta'")

    (This thread is open to anyone who would like to comment.) I wanted to grow a plant with MiracleGro to see how it would work if someone were on a budget. I chose MG's Tomato product because it has the sanest NPK ratio (1 - 1 - 1.17. The All-Purpose product is 3 - 1 - 2. I think that's too high...
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    Fix for wasted margins and invisible links

    I created a "user stylesheet" to fix two things that bother me about this site: 1) the huge margins and 2) the way links in posts (and blogs) can't be discerned from ordinary text. To use it: Install the Stylish add-on. It's available for Chrome or Firefox. Visit Rollitup in your browser, then...
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    Scotts (MiracleGro) bought General Hydroponics

    http://www.bizjournals.com/columbus/news/2015/04/03/scotts-jumps-into-the-marijuana-business-with-deal.html?ana=yahoo That's going to ruffle some feathers.
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    Humidity controlled drying box idea

    Have you guys seen this: It's called a Willhi WH8040, $25 on Amazon. They're on eBay too. The photo is deceiving, it's very small. ~3" wide, 1" tall. It will turn on a fan or dehumidifier when the humidity reaches a selected level. It has a number of useful features: Non-volatile memory. It...
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    Grow Northern (UK) new Holographic Series LED fixture!

    What do the experts think of this: http://www.grownorthern.com/lighting/holographic-series-1-led-grow-light.html . A 75w (actual) light for $350 GBP ($530 USD). It has some interesting features I haven't seen on other lights. And, they're not like the usual high-priced "secret sauce" lights...
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    Ten tons of MMJ consumed in Arizona

    Saw this on tonight's news Jan 09: http://www.azcentral.com/videos/news/arizona/2015/01/09/21530913/ They close saying it's a $100m business.
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    Flexibile Fixture for LED Lightbulbs

    I made the following fixture for Cree PAR38 spot/flood LEDs sold at Home Depot: This blog post shows how to make it (including a parts list and photos showing various positions it can be adjusted into). The electric outlets on top are useful for piggybacking multiple fixtures together, or to...
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    2016 Ballot Initiative

    Does anyone know what's being planned for 2016? Recreational use? Skipping the 2015 mid-term election seemed like a good idea. The Presidential race will bring more younger (more supportive) people to the polls.
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    Autos compared to photos started at 12/12?

    Has anyone done photos at 12/12 from seed? How does that compare to autos? I'm not looking for advocacy of autos. I've been growing an auto strain for awhile and love it. As mentioned in another thread, I have a (probably self-inflicted) non-flowering auto I'm forcing with 12/12. I just...
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    Forcing auto to flower with 12/12

    When you force a non-flowering auto to flower using 12/12, can you revert back to 18/6 after it gets going? Or, will that cause it to hermie or revert back to veg? I have one that isn't flowering. It's from a seed I got from an auto that hermied a little at the end of flower (stress). It...
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    How We Got To Now: Light

    There is a series running on PBS titled How We Got To Now. It discusses how various things were invented which we take for granted today (sanitation, glass, time). The latest eposide is titled "Light" and I thought it would be interesting to the DIYers here who are on the bleeding edge...
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    Does NPK ratio affect when auto flowers?

    I know autos have their own built-in timeline. But, I'm wondering if nutrient balance has much influence on that. I used to feed something like 2-1-3 in veg and my autoflower predictably showed sex around 3-4 weeks and had obvious bud sites around 5 weeks. Lately I've been feeding 2-1-1 and...
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    Blogs - must be member to view?

    When creating a blog it asks if it should be visible to "All visitors" or "Members only." The first choice implies that the blog can be visible to people who aren't logged in as an RIU member. However, it doesn't work this way. I can't view a blog unless I'm registered and logged in. I think if...
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    "Product Mixer" (spreadsheet) to find NPK/PPM of mixed products

    After I switched from GH Flora 3-part to Grow More Sea Grow, I wondered the actual NPK ratios (and strength) had been at the various "mixes" of GH Flora, and whether that could be duplicated with my Grow More nutrients. I created a spreadsheet (<<link) and thought this might be useful to others...
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    Feed every watering? (every other?)

    Is there a reason to feed every other watering? Referring to non-hydro, non-organic, I thought the goal was to feed as much as the plant will take without hitting the point where nute burn occurs. It seems like alternating water-only is would dilute the nutrients in the soil, requiring stronger...
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    2014 ballot initiative?

    I haven't seen any news regarding C-04-2014 (<<link) which was required to submit 260k signatures by July 3. I looked at Safer's website but it only talks about 2016.
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