I’m guessing what your smelling is lime. Lime is a great source Cal/Mag. I have looked at products like this and what makes me nervous is the lime. Now I’m not saying this is a bad product at all I only have 2 concerns with lime is its very slow release and it raises the soil Ph and it’s very hard to bring Down when lime keep releasing. With organic growing the ph range is much bigger but there’s a limit. Maybe I’m just over thinking it end of the day just something to keep a open mind about through out your grows.
At this point your girls look great so why fix something that isn’t broken?