Epsom salt. Cheap stuff. Your calmag will have it. Us cheap old guys steal the Epsom from our wives.
I do remember reading that actually about the epsom salt but totally spaced it when I ordered more nutrients and ended up getting the cal mag instead cus that’s what I originally had in my kind before I read about the epsom salt. Will definitely remember for next time. Good to know that was what was making my plants so light green had been wondering for a while and thought this was the cause but waited on doing anything because I didn’t trust myself on it
