Full spectrum is just a Chinese marketing term for blurple lights, sounds good but means nothing. There's no comparison between newer white LED techs and anything blurple. About the only thing those "full spectrum" lights do alright is veg. For flowering you want "full spectrum" white COBs or diode strips, they blow those blurples away, like twice or more the production ime. I started with those full spectrum Chinese panels over 4 years ago, quickly switched to CMH for flowering and used the blurples for vegging, then switched to COBs all around. No comparison.