I don't think so, because it only gets water when it wilts a little bit. It does have a lot of perlite. So maybe that's the issue. I've noticed yellowing issues with a lot of perlite. Thank you for responding.
Like hiphop said, it wouldn’t be ideal to use that all the way through flower but if it’s all you have at this moment it will get you through, I’m sure you can still manage to pull some meds.