According to the product label, Remington Solar Chlorine-Free Sun Shock works well with trace chlorine, or any other oxidizer of your choice. Algaecides, conditioners, clarifies, etc., etc., are unnecessary. Higher chlorine levels may be required with an increase in water temperature, increased swimmer load, rainfall, or new water added. If using liquid chlorine, add at or after sundown because the sun's rays quickly neutralize chlorine. The recommended levels are not absolute and may vary with changing water conditions. What works best for your pool is determined by experience. Allow your water to seek its own balance. Do not arbitrarily alter the pH, apply largedoses of chlorine (AKA 'Shock'), add algaecide, add conditioner, or try to change perfectly clear water. Give your pool water time to stabilize, and remember, simplicity is the key.