how many lux should be?

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RQS WEBSITE:
How Much Light Do Your Cannabis Plants Require?
Roughly, the lux ranges below are best suited to their corresponding stage of the growing cycle:
• Clone and seedling stage: 5,000–7,000 lux
• Vegetative stage: 15,000–50,000 lux
• Flowering stage: 45,000–65,000 lux

does this apply to the light I use and the duration of the light?

Lux to ppfd calculator

Put the lux meter at top of canopy, raise or lower light to get optimum lux reading depending at what stage the plants are, ie seedlings, vegging or flowering.
Whats the exact light you have?
Does the light have dimmer switch fitted?

Moflow said:

Does the light have dimmer switch fitted?

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no

Moflow said:

Whats the exact light you have?

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samsung quantum board LM281B+ 480w
bloom 5.week

Moflow said:

Lux to ppfd calculator

Convert Lux to PPFD - Online Calculator | Waveform Lighting

Online calculator to convert illuminance (lux) to PPFD (micromoles per second per meter squared).

www.waveformlighting.com

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which option should I choose

Got any pictures of the light? Is it like an hlg 550 knock off?

Any documents come with it, does it not say what spectrum it is.?

I have a lux meter and when switching to led I followed all of the conversion charts I could find with shitty results. I broke down and bought a par meter and was instantly able to dial in and my plants immediately loved life again.

Fallguy111 said:

I have a lux meter and when switching to led I followed all of the conversion charts I could find with shitty results. I broke down and bought a par meter and was instantly able to dial in and my plants immediately loved life again.

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Did you get light bleaching on yours? I had a lux meter from a mate and while it dialed in the CFL pretty well, I got light bleaching on my same wattage quantum boards.

Dadanga said:

Did you get light bleaching on yours? I had a lux meter from a mate and while it dialed in the CFL pretty well, I got light bleaching on my same wattage quantum boards.

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No bleaching, but the plants weren't happy. I think it may have been the ir diodes being to close. I tried everything I could to make a lux meter work but was not satisfied. I broke down and bought a par meter and my plants instantly responded when dialed in to proper par. I'm not a fan of technology and don't like wasting money, but for me the par meter was well worth it. Without it I would have just gone back to hps.