Red strawberry banana auto

I was advised to change the light from my 400w to a 100w led light- safe to say they didn't like this because for 5 days I had no grow from them at all. Popped the 400w back on and the next day I saw growth with the new leaves coming through. Won't be making that mistake again. Also started the nutes this week, 1ml per litre, we will see how they take to that. Slightly behind I think but hoping to make up for it when the nutes kick in. Also added a exhale bag today - more of a trial after mixed reviews. Edit - new leaves have grown but still have a yellowing. Added some biobizz because 1st thought was lacking nutrition. Drop me a comment if you have any ideas on this one I'm worried