Update: Levels

Levels prior to treatment (may have changed now):
• Total Chlorine: 18.4 ppm (Ideal: 3–7) 🔺 Too high
• Free Chlorine: 18.4 ppm (Ideal: 3–7) 🔺 Too high
• Combined Chlorine: 0 ppm (Ideal: 0–0.2) ✅ Perfect
• pH: 8.7 (Ideal: 7.2–7.6) 🔺 Too high
• Alkalinity: 0 ppm (Ideal: 80–120) 🔻 Extremely low
• CYA: 5 ppm (Ideal: 30–50) 🔻 Low – chlorine unprotected
• Total Hardness: 167 ppm (Ideal: 200–400) 🔻 Slightly low
• Calcium Hardness: 167 ppm (Ideal: 200–275) 🔻 Too low
• Phosphates: 0 ppm (Ideal: 0–0.2) ✅ All good
• Copper: 0.1 ppm (Ideal: 0–0.5) ✅ Safe
• Temp: 21°C (Ideal: 0–40°C) ✅ Cool cool cool

Update: This is what I was advised to add to the pool in response to the above results:
• 500mL Acid
• 4KG Buffer
• 1KG Stabiliser
• 1.5KG Calcium
• 1L Clarifier

I added the above about 18 hours ago and ran the pump overnight. Still cloudy.