indoor lights the good truth/ watts per sq. ft.

Here are links 

look at : Adding UVB light will reduce yields and don't worry about the heading. In this solacure link. this is the only print i can find with the original data that we concluded 20 year ago....IT WORKS LAB TESTED / connoisseur approved

https://www.solacure.com/myths.html   

https://www.amazon.ca/iPower-Mechanical-Electric-Outlet-Interval/dp/B00BDGHJK4/ref=asc_df_B00BDGHJK4/?tag=googleshopc0c-20&linkCode=df0&hvadid=293024423168&hvpos=&hvnetw=g&hvrand=4235360090811340738&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9001484&hvtargid=pla-310192433039&psc=1

lighting an area with the proper light wattage

https://modernfarmer.com/2018/03/grow-lights-for-indoor-plants-and-indoor-gardening/