Blog

  • Humidity 101

    Some of you said I went too fast in my video, so here's the transcript. If you have any questions, please don't hold back. Here's everything new and aspiring indoor gardeners should know about HUMIDITY!

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  • Beating the summer heat in your grow room

    Excess heat in your grow room really sucks. Not only does it place extra transpirational pressure on your plants, but it can seriously degrade the quality of your final product. This is particularly relevant to growers specializing in aromatic / culinary herbs where essential oil production is key to the development of good flavors and aromas. Also, if you are growing plants that enjoy cooler conditions (e.g. cold season crops like lettuce or cilantro) or species native to higher altitudes then heat problems are top of your avoid-list.

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  • Grower Questions, Questions, Questions!

    There's only one thing I love more than writing and making videos about hydroponics and indoor gardening: receiving FEEDBACK! Often I receive questions that really remind me of just how bewildering it can be to start-out, and trying to answer them is a great grounding experience and gives me tons of inspiration for which videos to make next.

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  • Rockwool vs. Coco Coir & Perlite

    I decided to grow four Tokyo Hot chile peppers to full maturity indoors using just high pressure sodium (HPS) lighting -- no sunlight. Three of the plants were eventually transplanted into 5-gallon Smart Pots (a breathable fabric container) filled with a 70/30 mix of Mother Earth coco coir and Perlite. The other plant was grown in a Grodan Unislab—just 304 oz (or 2.375 US gallons) of rockwool measuring just 9.5 x 8 x 4 inches!

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  • Pruning Indoor Plants for Grow Lights

    Pruning and training plants for cultivation under indoor grow lights is such an important technique to increase productivity—it really isn't just "another tool in the toolkit" for the indoor gardener as far as I'm concerned, it's mandatory—especially if you are cultivating fast-growing, heavy fruiting annuals.

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  • Chilling a Hydroponic Nutrient Solution on the Cheap!

    I don't have money for a nutrient chiller right now, and nutrient temperatures have been on the rise—reaching as high as 74F—I'd really prefer it to be around 68F—so what's a grower to do? Improvise! I used my freezer and some brain-stretching math to get to grips with lowering the nutrient solution using plain old ice.

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  • Let the Growing Commence!

    After months of planning, cleaning, building, and tweaking, the Just4Growers indoor garden is finally up and running!

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  • Intake Filters—Do You Believe?

    I recently called up one of the biggest grow stores in Europe to check on prices for intake filters as I could not find any listed on their website. Imagine my surprise when they told me that they do not sell them. Why? Because there is no demand! Sounds like a chicken and egg thing to me, so here are some good reasons why you should ALWAYS incorporate intake filters into your grow room set-up.

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  • Inline Extraction Fan Tug O' War—A Fair Test?

    We set the Hyper Fan 8" Inline Extraction Fan against the Max Fan 8" in a tug o' war style battle. The aim of the test was to determine which was the more powerful fan.

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  • The Ideal Mother Plant Growing Environment

    There she is! The plant you've always dreamed of! Stocky stem. Big chunky flowers and fruits. A nice lateral form. Vigorous! Pest and disease resistant. That's right. You've happened upon some awesome plant genetics. She's obviously going to be your new mother plant so that you can create dozens, hundreds, even thousands of genetic replicas. So how to best take care of this wonderful botanical specimen?

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  • 10 Tips for Setting Up Air-Cooled Grow Lights

    Looking to create a cooler garden that produces higher quality crops? Check out these ten time-honored tips for setting up air-cooled grow lights the right way, so you and your plants can enjoy maximum benefits!

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  • Grow Room Ventilation: Calculating Your Active Incoming Air

    Many indoor gardeners use ventilation to keep their indoor garden's environment within the optimal range for plant growth. Ventilation, or air-exchange, is all about getting that hot, carbon dioxide-depleted and humid air out and fresh, cool air in. Here we take a look at managing the incoming air.

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  • How To Grow Cilantro (Coriandrum sativum) Indoors Under T5 Fluorescent Growlights

    Despite being fairly hardy, many gardeners find cilantro to be a tricky beast. It bolts when it gets too warm and it loses its flavor and aroma when its over fed! Perhaps the solution is to grow it indoors under grow lights in a controlled environment?

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  • How much space is really covered by a 1000-watt grow light?

    16 square feet? 25 square feet? How much indoor garden do you get per 1000-watt grow light? Well, unsurprisingly, it depends on the species of plant you want to grow. Leafy greens like lettuce, rocket, cilantro and basil are more than happy at μMol 300. (That's 300 micromoles per square meter, per second.) Whereas if you want to grow fruiting and flowering crops like chillies or tomatoes indoors under grow lights, you probably want to be shooting for 500 - 700 μMols.

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  • Converting an Old Wine Cellar into an Indoor Garden

    Our new house has an old wine cellar—but I can’t keep the stuff around long enough to warrant storage on this scale! Instead, I’m going to build an underground indoor garden or “grow room”. I hope you will follow my progress, from design, build, maintenance and hopefully expansion over the coming months.

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