Hi mate, I jump the gun a lot. Last couple of grow I believe I've added bloom nutes too early. However, apart from harvesting too early I was very happy with my result. I did the same again this time...lol. I still see no issue with this. Some answers given on the same subject have hinted that adding bloom nutes during the changeover helps encourage flowering and a needed boost of PK for the be ready. I hope this helps, good luck and happy growing