In a 30K pool, each quart of 6% bleach will add 0.5ppm of chlorine. Test in the evening when the sun is off the pool. Add enough bleach to take it back up to 6ppm. Each evening, do the same. If you find that you have less than 3ppm when you test in the evening, take it to 7ppm with your doses of bleach. You don't want it to ever drop below 3ppm or you risk an algae bloom.

Keep adding muriatic acid to work to get the pH down. Good job! Keep us posted how things are going! Enjoy the pool.