irishboy
Well-Known Member
agreed. but i will say my 1k of leds will match the same size of 1k of HPS. but talking about a single smaller light source that is true. i have never seen a 180w match a 400w hps and ive been doing this for a long time. now like u said maybe 1 plant under the 180w match the yield of one plant under a 400w but in a true side x side using both lights in the size they can grow i think the 400w will take it every time. i know allot of company's claim this but i think its BS until i see some proof in pics.what people dont get is that HPS lamps and hoods will generally have a larger footprint then LED, however the LED concentrates a lot of light in one area. they may get 1 bigger plant from a 180, but a 400 with several even sized plants would prob be best.
now if were talking about a few smaller watt units then they can match HPS foot print watt for watt if u get the right leds
i am not saying its impossible for a 180w to match a 400w hps, but i havent seen it. the only way to say this is to do a side x side with everything the same, not with different strains from older grows or ect..