Me and my husband (military) just rented a house with a pool. .

By the way it looked when we moved in, I don't think it has been covered or messed with in the past couple years. The water was pretty much black. We did manage to remove the millions of leaves and other debris. And it has been shocked. so its debris free now and a light green color.

He managed to get the pump working but i'm pretty sure it was just trial and error. and now he is gone and I have NO idea what to do

We have a Hayward S-220T sand filter and solar industries pool heating system.
I have been watching videos and I just cant figure it out and I really don't want to mess something up.

Anyway, any help would be great.

Thank you!