I'm new to the forums (so please excuse me if I screw something up) and I'm also new to pool ownership. I have a 7,000 gallon gunite pool that's approximately 2 years old (though I have not owned it very long). The pool has been under the care of a local pool company. Recently, I left town for 6 days and upon my return, I found these stains on the bottom of the pool:
Pool_Stains_01.jpg Pool_Stains_02.jpg Pool_Stains_03.jpg Pool_Stains_04.jpg
The pool looked beautiful and blemish free before I left town. What do you think could have caused stains like this?
Thanks in advance for your experienced opinions/thoughts!