Spiderfarmer SF-4000 Review (High-res PPFD Results for 10 Heights + Temp and Power Tests)

Putting the Spiderfarmer SF-4000 through its paces to see if it can hang (ha!) in a 5x5. Thanks to spiderfarmerebay for sending the light for free to test. ebay: www.ebay.com/itm/SF1000-2000-4000LED/124389310816 Amazon: amzn.to/38qkPhc (affiliate link)

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