Reddit reviews Meanwell LPV-60-24 Sealed Panel Mount 24V 0-2.50A Power Supply with LED Driver
We found 1 Reddit comments about Meanwell LPV-60-24 Sealed Panel Mount 24V 0-2.50A Power Supply with LED Driver. Here are the top ones, ranked by their Reddit score.
Price For: EachOrder Unit: Each 1 Depth:: 162.5 Height:: 32 Input Voltage Max:: 264 Input Voltage Min:: 90 Input Voltage VDC:: 127V to 370V LED Driver Mode:: Constant Voltage No. of Outputs:: 1 Output Current:: 2.5 Output Power Max:: 60 Output Voltage Max:: 24 Output Voltage Nom.:: 24V Power Supply Output Type:: Adjustable, Fixed Product Range:: LPV-60 SeriesSVHC:: To Be Advised Width:: 42.5
HPS is somewhat efficient.. reaching up to 100 lumens/watt, but it's still inefficient compared to LEDs. One good benefit of HPS is that it will generate heat if you need a heating aspect at the same time.
I would definitely recommend samsung F series LED strips if you want great full spectrum light with high efficiency. 1 of these: https://www.digikey.com/product-detail/en/samsung-semiconductor-inc/SI-B8T521560WW/1510-2223-ND/6624007
would give you over 9.9k lumens at about 192 lumens/watt, running at about ~55w. The strip is $26 and the power supply is only $20 for the high quality meanwell ones (https://www.amazon.com/MEAN-WELL-LPV-60-24-DRIVER-AC-DC/dp/B0180X3SRK/ref=sr_1_3?ie=UTF8&qid=1511761666&sr=8-3)
You can probably even cut that in half if you wanted a no name power supply. ~$55 should cover almost everything including a u-channel as a heatsink.
Get something between 3000k-5000k in temperature - this will depend on the crop and whether you're looking for more vegetative growth or more fruiting type growth.