Member of the Year: 2018 - Member of the Month: Jan 2018, Nov 2018, Jan 2020 - Grow Journal of the Month: Aug 2018 - Plant of the Month: Oct 2018
They do want more light in flower, but you have to know how much they're getting. A lux meter comes in really handy and will keep you from burning any plants down the road. Mine was about $32 from Amazon, a Dr Meter LX1330B. And here is a handy guide on how to use it:
With a lux meter, you can measure and optimise the amount of light your cannabis plants receive, which helps to boost final yield.