My cousin left us to house-sit for the month while he's in military training. He's completely unreachable. All he showed us on the pool maintenance was how to backwash the sand filter and to shock it once a week. To my understanding it is a SWG system with a vinyl liner.
The pool was fine yesterday - today it has a light green hue to it and after brushing it, skimming the junk off the top and shocking it it hasn't improved.
I tested it.
Help? It could stand to have more water put in as well but I'm afraid to touch it.