rusting

I've had this AF life source for maybe 2 months and have only used it on 2 occasions. I sealed it tightly after each use, including the bag inside. I went to dose some today and noticed the bag had this rust coloration all over the inside walls. I've know for a while that this product contains...

Hi Reefers, I have a 146 gal Mixed Reef which is 2 years mature System and i dont have any Algae etc. Alk 8.5 dkh No3 -5ppm Po4 .10 ppm Mg 1350 ppm Tin 25ppm Salt 1.025 All Other parameters Stable. Less Corals Somehow Receding Continuously Specially Torches etc. Changed 50% water Thrice till i...