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- Oct 22, 2020
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hey found something very interesting, and something you may be interested in. on my iphone I downloaded the App
( Korona-grow light ) and took a piece of bright white 20# paper to cover the front camera so it filters the light as shown in the linked video below went to a buddies place and we tested my light i built with his apogee MQ501 and my phone on sunlight ppfd was within 1 to 5 points of his 500+ dollar light meter
youtube.com/watch?v=t0umUgrS_UE
( Korona-grow light ) and took a piece of bright white 20# paper to cover the front camera so it filters the light as shown in the linked video below went to a buddies place and we tested my light i built with his apogee MQ501 and my phone on sunlight ppfd was within 1 to 5 points of his 500+ dollar light meter
youtube.com/watch?v=t0umUgrS_UE