Try doing an FC and CC test on your tap water to see what that shows.
Has your Cyanuric acid level been consistent, or has it dropped recently?
Something doesn't seem right with your pH being so low with a SWG and a TA of 110. The pH would tend to rise with that combination, unless something acidic was added. Do you know why the pH is low?
Does the water smell, or have foam?
Have you added anything to kill algae? Perhaps algaecide, copper, Yellow-out, or anything else?
Does the liquid chlorine look and smell like it should? It should be clear yellow with almost no smell. If it is dark, cloudy or smelly, it might be bad.
Note: Don't intentionally smell liquid chlorine, bleach or any other chlorine source.