1. Add a dose of bleach ASAP to avoid problems.

2. You have low chlorine and no CYA; use dichlor to chlorinate.

3. You can use the SSR => http://pool9.net/ssr/

4. But your water is at risk for scale or sudden formation of a milky calcium precipate, so . . .

5. Read the muriatic acid page => http://pool9.net/ma/, get some acid, and lower your pH to near 7.0 . . . and then KEEP it there.