HI, Sorry if this has been asked a lot, I looked around and never found any answers. I read an article that said liquid carbon/ Excel is light sensitive and should be added before your lights come on. Will my plants absorb the Excel in the dark and then utilize it during their photo period? How far before the lights come on should you dose it? Or do you just dump it in at any time lights or not?
If anyone can give me a technical answer to this so that I understand better that would be AWSOME!