Arizona pool with cracks and stains.

[Scotsman]

Thanks PoolDoc! Those enhanced pictures are awesome, I was afraid they might be too washed out when I sent them.

The pebble stuff is the POOL surface, I just got close to the first step with the camera. Despite the cracking there doesn't appear to be a leak yet, so I'm wondering if coating it with something this winter might be a good option.

[PoolDoc]

I don't think it's cracking. Rather the binder holding the pebbles in place has eroded or dissolved. You might ask around locally, and see if you can find out what that surface is made of and how it's installed. If you can find that out, you may be able to find out what your repair options are.