Light Meter
Saturday, September 24th, 2011
Light Timers are a Helpful Tool
Soilless gardening is nothing new, and in fact dates back several thousand years; however, today’s indoor gardening supplies are definitely high tech. Growing indoors is not “rocket science,” but it’s definitely science. Although you are growing plants inside in a soilless medium such as rockwool or even gravel, your objective is to duplicate the natural conditions under which your plants evolved. Monitoring these conditions and maintaining control over them requires that you keep and maintain numerous kinds of meters and controls among your indoor garden supplies.
Acidity or Alkalinity?
Depending on the plants your growing indoors, your medium needs to have a careful pH balance between acidity (low pH) and alkalinity (high pH). If you are using a highly alkaline medium such as rockwool (the most common choice), you need to amend it with an acidic substance. You’ll then need to carefully monitor the pH balance; pH meters are the best way to make sure that your plants are growing in the best possible environment.
CO2 Enrichment
Recall from your high school science courses that plants “breathe” carbon dioxide and “exhale” oxygen. This is an aspect of plant growing indoors that often gets overlooked. Your indoor gardening supplies should definitely include a CO2 generator. Why? For the same reason that you don’t want to breathe in a tightly sealed space. Just as you would quickly use up the oxygen in such an environment, so too do plants use up the CO2 in the enclosed spaces in which hydroponic gardens are maintained. Adding increased amounts of CO2 with a CO2 generator can also speed up the process of photosynthesis, thus maximizing plant growth.
The most money you’ll invest in indoor gardening supplies will most likely be for lighting. Much information about types of bulbs and reflector hoods is available elsewhere; once you have installed a lighting system however, you will need to do everything possible to make certain that it approximates natural sun conditions as closely as possible. Light timers allow you to control the length of time your plants are exposed to your artificial “sun,” whereas light meters permit you to monitor elements such as brightness and wavelength. Remember that plants’ growth cycles are tied to the changing seasons, and the corresponding changes in the hours of sunlight as well as the angle at which those rays strike the earth.
Lots to Choose From
Meters and timers are the heart and soul of modern scientific growing indoors, and are the most important indoor gardening supplies you can own after a good lighting system. For this reason, it makes sense to buy the highest quality devices your budget permits; these are indoor gardening supplies that you don’t want to skimp on.
About the Author
Anne Harvester has a great deal of experience with indoor gardening. Hydroponic gardening is the way of the future. Known to some as “soil less gardening”, hydroponics are proven to grow plants 20-30% faster than their soil grown counterparts.
light meter for photography – why I don’t use it
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Oakton EcoTestr pH 2 Waterproof pH Tester, -1.0 to 15.0 pH Range $57.95 Simply dip and read— the orientation of the display means no need to turn your head or tilt the tester. This low-cost meter is perfect for most applications. The single-junction electrode is recessed to protect against breakage. The unit offers up to three-point calibration with auto-buffer recognition for quick calibrations, automatic temperature compensation for accurate reading under chang… |
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Beer Wort and Wine Refractometer, Dual Scale – Specific Gravity and Brix, replaces homebrew hydrometer $19.99 This refractometer is for measuring the sugar content of beer and includes an automatic temperature compensation of 10 – 30 degree Celsius. This refractometer can replace your hydrometer for easier and more accurate measurements. Simply use the dropper to take a sample of wort and put it on the prism. Then hold the refractometer up to the light and look through the eyepiece. Due to the dual scale … |
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LEGO Kids’ 9002946 Star Wars Han Solo Watch $17.00 Perfect for young or old Star Wars fans, the LEGO Kids’ Star Wars Han Solo Watch features a fun, colorful dial with a cartoon image of Han Solo. The white hour and minute hands and Arabic numeral hour indexes make it fun to tell time. You can customize the watchband with interchangeable links or change out the light gray bezel for the black one. Plus, the watch comes with a Han Solo LEGO mini-figu… |
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Inner Mounting Flame $7.99 Reissued with sparkling audio and exclusive photographs, this first, 1971, Mahavishnu album certainly vies for the title of the greatest of all jazz-rock recordings. Through spiritually questing flights of intense fury and exquisite quiet, it never loses its sense of inexorable force. Jan Hammer (keyboards), Jerry Goodman (violin), and bassist Rick Laird are completely sympathetic with guitarist J… |
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Beethoven: Moonlight, Pathetique & Appassionata Piano Sonatas, Opp. 13, 27:2, 57 $9.98 Rudolf Serkin’s early 1960s accounts of the most popular “name” sonatas, on a CBS “Great Performances” mid-price CD, are compellingly direct and offer excellent value. The playing is deliberate, but hardly theatrical: as always, the pianist emphasizes the virtues of literalism. The recordings are closely miked and sonorous, and convey good piano tone along with every breath, sigh, groan, and vocal… |
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My Experiments with Groove $10.94 Instrumental trio Green Light is drummer Adam Snow, bassist Dustin Hofsess, and guitarist Kevin Gill. This is a band that is coming from many different places musically. As a result, the Green Light audience is made up of an interesting variety of people: jazzers and rockers, the folky and the funky, hippies and computer programmers, the drunk and the devout… Each of them finds something abo… |
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P3 International P4400 Kill A Watt Electricity Usage Monitor $50.00 Empowers You to Save Hundreds on Electric Bills Electricity bills are rising. Now you can cut down on costs and find out what appliances are actually worth keeping plugged in. Simply connect these appliances to the Kill A Watt, and it will assess how efficient they really are. The large LCD display counts consumption by the kilowatt-hour, the same as your local utility. You can calculate your elec… |
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First Alert CO615 Carbon Monoxide Plug-In Alarm with Battery Backup and Digital Display $27.95 Carbon monoxide (CO) is the leading cause of accidental poisoning deaths in America, yet many people don’t know they are suffering from CO poisoning until its too late. Since symptoms of CO poisoning are like the flu, you might not even know you’re in danger at first. That’s why a carbon monoxide alarm is an excellent way to protect your family. It can detect the CO you can’t see, smell or taste i… |
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Apex REM 15 15-Foot Connector Hose Remnants, Colors May Vary $5.99 3-ply hose remnant for light-duty gardening needs. U.S.A. Application: Garden, Diameter (in.): 5/8, Hose Length (ft.): 15, Color: Green, Material: 3-ply… |
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Saturday Night Live (SNL) March 19, 1977 – Broderick Crawford / Levon Helm / The Meters $1.99 … |
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HydrofarmLight Meter $28.99 HydrofarmLight Meter |
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Cinematography (Paperback) $29.64 There`s more to being a DP than holding a light meter! With this book as your guide, you are on your way to learning not only about the equipment and technology, but also about the concepts and thought processes that will enable you to shoot profess… |
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Digital Capture After Dark (Paperback) $23.19 The pitfalls of photographing at night are many. Autofocus and built-in light meters generally fail at night. Long exposures tend to make noisy or blurry photographs. Cameras set to automatic generally trigger the built-in flash in low light co… |
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ASAHI PENTAX S DIGITAL SPOTMETER Fine condition/WORKING ORDER $110.89 |
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General Electric Exposure Meter Type PR-1 FOR FILM OR PLATES in WORKING CONDITIO $22.92 |
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Digital Light LUX METER 100,000 ±4% LCD Camera PhotoOTS $30.95 |
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Photoelectric exposure meter. LENINGRAD 4 $3.00 |
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USSR light METER: sverdlovsk – 2. $17.00 |
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VINTAGE GE LIGHT METER VERY OLD FROM MID 1950s TAKE A LOOK AT THE PICTURE $7.00 |
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Sekonic L-758C Cine Light Meter $639.00 |
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Gossen Multibeam Multi Angle Electronic Spot Light Meter $129.00 |
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Gossen LunaPro Exposure Meter $89.00 |
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Gossen ULTRA-PRO Exposure Meter “Best Meter Ever Made” $269.00 |
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VINTAGE GERMAN GADGET CDS WEIMAR LUX LIGHT METER CASE $100.00 |
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Gossen Luna-Pro Black Model Light Meter with Leather Case $59.99 |
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Gossen Sixticolor Brown Leather case only good no reserve $4.99 |
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Gossen Luna-Pro Beautiful Black Model “Rare” $169.00 |
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VINTAGE WESTON MASTER II MODEL 735 LIGHT METER IN LEATHER CASE $9.99 |
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Vintage Sekonic L-6 Compact Light Exposure Meter With Leather Case And Chain $19.95 |
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Vintage KODALUX L flash unit w/ Leather case ~ plus manuals and provenance $39.88 |
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General Electric Light Meter Type DW-48 with Leather Case $19.00 |
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SVERDLOVSK-4 Photoelectric Lightmeter Box Passport #162175 CLASS A $47.00 |
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LIOS-SCOP EXTICTION LIGHT METER $49.00 |
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Vintage Pentax Spotmeter V Analogue Meter, Lens Cap, Case & Manual $304.99 |
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Vintage Cine Kodak Eight Model 25 Camera Light Meter Splicing Outfit Case Books $80.00 |
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VINTAGE DeJUR-AMSCO PHOTOELECTRIC EXPOSURE METER MODEL 5B $12.50 |
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1901 Imperial light meter for bright light-Imperial plate co. Cricklewood $158.01 |
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Spectra Professional Light Meter in Case Model P-251 $49.99 |
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OPTEK Vintage USSR Soviet Russian OPTIC Lightmeter BOX $20.00 |
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GE Guardian Exposure Light Meter In Original Box & Leather Case & Strap $30.00 |
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Vintage / General Electric / PR-1 Exposure Meter / Light Meter / Leather Case $5.99 |
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GENERAL ELECTRIC MODEL 8DW58Y4 LIGHT METER #KF003 $4.99 |
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A Rare Vintage Sangamo Weston Light Meter – With Original Case $15.79 |