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Where Grower's Choice AG ships from, how fast, which voltage to order, safety listings, rebates, AG-140 pricing, light plans and how to reach the store.

PSE's Commercial Horticultural program pays up to $0.20 per annual kWh saved on LED grow lights, with a cap of 70% of cost on retrofits. You need a DLC-listed fixture and pre-approval before you install. Here's how it works.

Under-canopy bars put light on the bud sites top fixtures can't reach. Seven reasons they pay off, the one comparison that matters against adding more top light, and when they are the wrong buy.

A light plan answers the expensive questions on paper: how many fixtures, where they hang, what PPFD the canopy actually gets, what the room draws, and whether a rebate applies.

The voltage you run your grow lights on decides how many fixtures fit on a circuit, how much copper you pull and which model you order. Here's how to choose.

Under canopy LED bars look almost identical in photos: a four-foot bar, a row of diodes, a connector on each end. The spec sheets are where they differ. Four numbers tell you most of what you need before you buy for a flower room. 1. PPF: how much light the bar makes PPF (photosynthetic photon flux) is the total light a fixture puts out each second, in µmol/s. Four-foot under canopy bars on the market today run from roughly 325 to 455 µmol/s. A bar with more PPF lights more l

SCE pays $14 to $105 per horticultural LED fixture in 2026 and PG&E $9 to $70, but only for DLC-listed fixtures above a 3.24 µmol/J floor, and the floor rises to 3.38 at SCE in 2027. Here is what each California utility publishes and how to apply.

The AG-140 comes in two spectrums at the same 140 W and the same price. Both are DLC and ETL listed. R80 Red Enhanced puts out more light per watt; 3K Full Phase is a balanced white. Here's how to pick.

Under canopy light pays off when it lands on bud sites that the top lights can no longer reach. That makes timing, placement and ramping as important as the bars themselves.

PPFD tells you how much light reaches the canopy each second; DLI tells you how much it gets in a day. Here's the formula, worked numbers for 18/6 and 12/12, and how to plan a room around them.

Most utility rebates for LED grow lights come down to three things: a DLC listing, a minimum µmol/J, and pre-approval before you buy. Here's how the programs pay and how to qualify.

A 2025 peer-reviewed cannabis trial found subcanopy lighting raised dry flower yield by 24.58% and two-height under canopy lighting by 29.95% over top lighting alone. Here's what it means for your room.

Replacing a 1000 W HPS with the 800 W TSL-800 saves about 1,095 kWh and 850 BTU/h of heat per fixture per year. Payback by electricity rate, what stays the same, and what to check first.

Plan on one AG-140 bar per 4 × 2 ft of bed: 2 bars under a 4×4, 4 under a 4×8. Here is the math, the daisy-chain limits by voltage, running cost and the full cart list.