C
cbr shadow
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I have a question regarding lights that I ordered today. After some research I decided on Spider Farmer SF 2000 LED lights. These are quantum boards, Samsung LED’s and a nice LED driver.
I see in all of the reviews that people put a minimum of 16-18” gap between the lights and the plant, which I believe is to avoid burning the plant. It looks like the center of the light at 18” will put PPFD near 900-1000 based on the reviews I’ve seen.
At 12:00 noon in the summer the sun puts out up to 1500 PPFD according to a study I read. Surely there’s no risk of burning plants on a summer day like this, correct? What am I missing?
I want to make sure I’m giving my plants everything they need for fast growth, but I’m confused about how close I should set the lamps above the plants based on the above.
My plants that I’m growing are Portulacaria Afra, which is a type of succulent/tree that loves sunlight. I’m growing these out for a bonsai project that I’m working on. These are inside a modular shelving unit that is 24”x60” footprint and is fully lined in mylar on the inside.
So my questions are:
1) How close should I put the lights to my plants? Everyone online says 18” but why not closer?
2) Why does the sun not burn plants at 1500 PPFD, but my LED’s will?
3) Should I get a PAR meter so I can test better?
4) Is sunlight always better than indoor lights, or is it possible to do better grows indoors than outside?
I see in all of the reviews that people put a minimum of 16-18” gap between the lights and the plant, which I believe is to avoid burning the plant. It looks like the center of the light at 18” will put PPFD near 900-1000 based on the reviews I’ve seen.
At 12:00 noon in the summer the sun puts out up to 1500 PPFD according to a study I read. Surely there’s no risk of burning plants on a summer day like this, correct? What am I missing?
I want to make sure I’m giving my plants everything they need for fast growth, but I’m confused about how close I should set the lamps above the plants based on the above.
My plants that I’m growing are Portulacaria Afra, which is a type of succulent/tree that loves sunlight. I’m growing these out for a bonsai project that I’m working on. These are inside a modular shelving unit that is 24”x60” footprint and is fully lined in mylar on the inside.
So my questions are:
1) How close should I put the lights to my plants? Everyone online says 18” but why not closer?
2) Why does the sun not burn plants at 1500 PPFD, but my LED’s will?
3) Should I get a PAR meter so I can test better?
4) Is sunlight always better than indoor lights, or is it possible to do better grows indoors than outside?