Its all down to the light..modern double enders are as or more efficient as the best LEDS, but they emit their light out 360 degrees while led is down to the crop..LED only win on efficiency there, lumen/watt they are on par with each other, but HPS must reflect half the light back, though I find HPS has better penetration but it all depends on the amount of light you giving, HPS bigger single source of light, LED more even spread..If you match your HPS wattage and forget about the salesmen speak BS about saving power and less heat etc..and aim for same light spread over the canopy, then you score..as you will need slightly less wattage to achieve the same even spread of light and if going for super high PAR then you get the penetration..but the difference in wattage is minimal and the resulting difference in heat also minimal..thats what I found..or one can believe the salesmen about how uber more efficient they are, and put in less light than optimal and get smaller buds that are really compact LOL..I've also seen donkey dicks long as your arm under LED, its all down to the par and inverse square law at the end of the day..with any light there is only a usable zone that is really productive and its about how you fill that space..In greenhouses you work around that sort of, with light diffusion, and inverse square law applied to the sun means no real drop off of light except where the plant is shading itself, so one grows them taller..LEDS wont suit your style of growing star, with your big trees and vertical lamps..though with a roof of LED bars and a high density sea of green of NevilsC5 mango clones planted straight into flower..you'd break the yield records..have to dripfeed or flood/drain..be crazy with a 3-6ft thick solid lawn of purple haze..
I’ve been HPS since 1997 and I’ve never seen the need to change…side note I’ve watched the LED industry grow and grow and grow and see more people go over and over and I don’t like what I see Although I do understand why many people use them… usually about temperature control &the efficiency of the electrical usage & yes they work but the buds are generally inferior to HPS (at least to my eyes) I’ve given local guys clones from my plants and basically their tent grows with LED produce flowers that are almost unrecognizable to the parent plants … they always seem more compact and more golf ball like…I don’t know I could be wrong
they came before I could even exhale!
… What strains are you currently running? Do you use specific nutrients , or do you use different brands? (depending on what you have on hand, which is what I do)
