Red Sea Complete Reef Care 4-Part RCP Large Pack / 600L is a comprehensive 4-part supplement program that ensures optimal growth and coloration of corals. It is based on weekly calcium measurements, which determine the dosages of all four parts.

Maintaining proper water parameters is critical to the success of a reef aquarium, providing a stable environment for the corals. This is achieved with the use of complete and balanced supplements designed to work together for long-term use, maintaining the water's ionic balance.

The package is the result of extensive research into the physiological requirements of SPS, LPS, and soft corals, and includes 36 essential primary, secondary, and trace elements necessary for coral growth and coloration.

Red Sea Complete Reef Care 4-Part divides the 36 trace elements into four parts to ensure their stability and bioavailability:

• Part 1: Calcium, Magnesium, Strontium, and Barium.
• Part 2: KH/Alkalinity components.
• Part 3: Potassium, Boron, and halogens Iodine, Bromine, and Fluorine.
• Part 4: Iron, Manganese, Cobalt, Copper, Aluminum, Zinc, Chromium, Nickel, and 18 other bioactive trace elements.