AGL JOURNAL
Deep dives on PPFD, spectrum, efficacy claims, and the manufacturers that actually deliver.
California's 2025 energy code sets a 2.3 µmol/J efficacy floor and mandatory controls for grow lights. Here's what changed, and how Massachusetts differs.
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Samsung is exiting horticultural LED chips. Here's what's replacing them, what changes in your fixture, and what to verify before you buy.
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Black Dog LED profile: founder Corey Drew, CEO Noah Miller, the Phyto-Genesis Spectrum, verified PhytoMAX-4 specs, and what independent growers say.
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DLC certifies efficacy, not electrical safety. Here's what UL 8800, NEC 410.172, and the GFCI rule in 410.184 actually require for grow room wiring.
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UL 8800 requires IEC 62471 photobiological testing for DLC-listed grow lights. Here's what Risk Group ratings mean for your crew and compliance.
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Full-LED greenhouse conversions can raise heating bills in cold climates. Real trial data shows what separates 40% energy savings from a rate hike.
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DLC Hort V4.0 is now utility policy. See which grow lights clear the 2.5 µmol/J floor and verify your fixture before applying for rebates.
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Interlighting puts LED fixtures inside the canopy, not above it. Research and manufacturer specs show real yield gains in tomato and cucumber.
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2026 research shows real-time plant feedback beats fixed light schedules: energy down 6-38%, yield up 13-32%. What commercial growers need to know.
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Passive or active cooling: which LED grow light design protects efficacy and lifetime? A brand-neutral look at the engineering behind the marketing.
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