I am on day 49 of flower and was wondering if I go from a blurple led to a mars hydro led, will this affect my girls in any negative way? Thanks in advance!
it could.. switching to a higher powered led is one thing but if your totally flipping spectrums.. I don't know I'd caution against it as you don't know what she's gonna do. Also at 7 weeks into flower and with the looks of your picture you won't change much as your pretty close to a harvest date anyway.