Spiderfarmer se3000 distance and % all stages

This depends on if you are growing autoflowers or photoperiods... or, will you only use in vege phase etc etc.. For 18/6 operation, you can cover a larger area with 100% power or cover roughly 2/3rds of the area at roughly 2/3rds power and this will be an easy switch to 12/12 operation by just bumping power to 100% and hanging distance remains the same and covers the same suggested 3x3 space. With an autoflower-only run, you can cover 3/2 more space at 100% over 18hours. So it could feasilby cover up to 10.7 * 3/2 = 16 sq ft if only used for autoflowers or vege phase. This may require a higher hanging distance in order to cover such an area. This is 100% based on light production of the light and not considering light distribution. In reality due to hanging distance / geometry of providing strong light end-to-end, it may be wise to cover a slightly smaller area in this context. All suggestions by all people will require some trial and error on your end. Local variables will impact exactly how much DLI you can provide. It will be slightly different than others. But, once you figure out "1" configuration that works well, math will very precisely tell you what to do when you change hours of operation or area of coverage. i.e. Once you get the light 'perfectly set up for 18hours operation, you also know what to do with 12 hour operation, all other factors remaining the same. https://www.spider-farmer.com/products/spider-farmer-upgraded-se3000-full-spectrum-led-grow-light/ 856 umol/s total PAR produced by se3000 The following is based on 861 PPFD / roughly 37 DLI target for 12 hour operation. Local variables dicate 'max' DLI, so any and all suggestions require some trial and error on your part. You may need 35... you may be able to go to 40. 856 / 80 = 10.7 sq ft coverage with 12/12 operation. (about 1 m^2). so if the spec sheet is accurate, you may need a bit less than 100% power for 12 hour operation in a 3x3. This dominos into 18/6 needs in a proportional way, too. 18h operation needs 2/3rds of that '80umol/s per sq ft' over 12 hours. If other factors remain the same, it will be inversely proportional to hours of operation. Once you know what works well in vege (18h operation, usually), it's just basic math to know what to do for 12 hour operation. *if watts divided by diode count is not at least approaccing 0.20watts per diode, there's reason to suspect the accuracy of the spec sheet. samsung.com has accurate spec sheets. Light manufacturer's often lie or employ weaponized incompetency in regard to their spec sheet information. Even if they used the more expesnive diode options for the lm301 to potentially reach 2.85umol/J efficacy, if running 'hot,' which is anything over 0.2watts/diode, it will have a reduced lifespan compared to the "50,000" hours it promises. It'd be unusual to be cheap about diode count but buy the best quality diodes though... I can't find this info. worth an email to spiderfarmer. the fact they withold this basic specification is a bit suspect. Mars hydro was putting out accurate spec sheets for a few years, but as of 2024 they reverted to letting their marketing team leaving out or misrepresenting facts. In 2024 or 2025 mars reduced diode count of their "FC" series of lights.. they are no longer using a proper diode count relative to watts.

ditto... spider farmer has done that research , i'd use their recommendations

Their actual map is what I'd follow, websites are typically more up to date than manuals.