![]() ![]() Now back to the Two APPS we found (FREE, Click to View or Download either APP):Īs a benchmark we used “‘Ol Faithful”, our 9V battery powered Milwaukee Instruments LUX Meter. So long as you compare relative apples to relative apples and are looking for general readings rather than exacting values this will suit your indoor growing purposes just fine.Īs you progress in your thirst for more knowledge or specific information, you may decide to go more the route of PAR readings, etc, just be prepared to spend more money to know the specifics– although your plants may not seem to care which meter you use, so long as they get the right intensity from the light right source and at the right time. ![]() However, LUX or LUMENS for our purposes is just fine for comparing similar light sources for intensity, for example one HPS lamp to another or following a grow tip, that for example says SPECIFIC light sources like: Cool White Flourescent, HPS or MH. As an indoor hydroponics grower, there is a good bet you prefer more blue in the light spectrum for vegetative growth and more red later on in budding and flowering. For example, it’s silly to think all plants use light nutrition the same–and all the time. There are other measurements like PAR, MicroEinsteins, etc….and they are not without their criticisms too. Lux or lumens measurements not take into account the Spectrum of light, ie the different wavelengths/colors that have different effects on photosynthesis (the light energy that is specific to plant growth). ![]() *10 LUMENS = 1 LUX, bright sunlight at noon in Calfornia, USA is about 5000 Lumens or 500 LUX.įor the scope of quick and straight to the point free grow light meter apps review, we’ll simply say that there is a lot of different ways to measure light. However of the 66 different Apps we scrolled through quickly, we spotted two that met our criteria: Being humble gardeners, we have an older model iPhone 4 handy and wanted to see if we could successfully use it as a light meter for gauging our hydroponics crop lighting, and it had to be 100% FREE for our test of Free Grow Light Meters Apps.ĭoing a quick search in the App Store online, we found quite a variety, most of which were best suited for photography. Free grow light meter apps for smart phones like your iPhone or Android. Free Grow Light Meters Apps Have a Smart Phone? You HAVE a Light Meter!Ĭool.
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