I'm a United States Marine and I have been tasked out with maintaining a 25m x 10m pool which is critical to our mission accomplishment. I have never maintained a pool before, if anybody could give any pointers such as which chemicals to use and the amount of chemicals to use that would be great. I have uploaded photos of the pumps and filtration system. If anybody has any knowledge of preventive maintenance or known issues with this system it would be greatly appreciated for any suggestions. I have uploaded the photos...