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Good luck, seems I can't find anything lower than 400 mA drivers anywhere myself. Sorry

https://www.digikey.com/product-detail/en/samsung-semiconductor-inc/SI-B8U261560WW/1510-2218-ND/6624002

576 diodes of 561c sammy strips with a meanwell 240H-24b pulling 260 watts from the wall, 35 watts of supplemental diodes pulling a total wattage of 300 from the wall covering a 3x4 area.

It will take a minumum of 2 weeks for those to recover if they do ! Then you have to worry about insect pressure in there weakened state or a pathogen attack.

3 years of 12/12 with f-series strips 300 watts on left, 260 watts on right or about 25 wpsf

That's a problem with the plant not a normal purpling

It's still a summary of antiquated test, believe what you will, that's fine. I still rely on what the plants tell me.

You do realize that those are just summaries of testing done back in the 90's and before, things have changed since then, no actual test done by the author.

You'll need some 740 nm up to 660 also for balance

Sticker the Better there Bud

Violets, not blues. 410-420 nm

many factors that should determine feeding or watering frequency. 1 grade of coir being used, 2 size and type of pots being used to plant size, 3 environment, just always saw best results no matter what type of system I've run ( Areo, DWC, coir or soil ) the limiting factor has always been...

How big is the plant ? Not that hard to re=pot with a better mix just wash some of the soil from around the roots and re-plant, feed it some microbes and she shouldn't stall very much

Lettuce will perform best at 20 watts sq. ft. and a DLI of 18-20 moles per day

My HLG 240-24B pulls 268 watts from the wall, so I think overdriving is possible with B version drivers.

best performance from my F-strips comes from running them between 1.0=1.2 amps for the single row 560 mm.

Depends on what you are running for the strips, I prefer to run the strips at 1 amp each, so 5 double row f-series would get 1 amp each.

I do not see an DC amperage output spec. . @ 48V and a 240 watt max that should be like 5 amps total for that driver.

Depends on how hard you drive them. I have specs for both aluminum C-channel and 1" Heatsinks USA profiles C-channel Heatsink USA 1" profile. And stop using small bottles for comparisons

Best thing I can tell you is to not go over around 5% of your total spectral output in far reds supplementation, I run 15-20 watts of far reds per 260 watts of white