Today I opened a "new" one year old 1 liter bottle of Flourish. When I dosed it using my dropper bottle I noticed that it did not look quite right. Insead of the usual dark color it appeared to be watered down... quite a bit too! It is less than half as dark as I am used to. I wonder if I got a bad batch? I used it but I am not sure.... thought I'd ask here. Anyone ever had this happen?