Hi guys first post here ever after reading for years im almost 5week 12/12 and all my darlings are showing signs of yellowing.i know this can happen towards the end but never had it this early.thought it was nutlock after badheat we had last few weeks.so gave. them a flush last night and cleaned all drip trays etc incase salt build up.been growing a while but never like this in loft.(last min choice after problems in normal growroom).just looking for sum advise to help my babies pull through.got pix of when lights are on n off,althpugh looks worse under hps600ww