Might want it closer to your light source…I would try to lower your light (or raise your lady) a couple inches at a time until it feels right. You’re correct to assume the clones are sensitive, but once they get started they are a little further along than a seedling of the same size. That said, you can be a LITTLE BIT more aggressive on nutes and light. Hope all goes well. I was looking on my bottle of clonex and could t find an expiry date. Where would one look??