Red Sea 4-Part RCP - Lrg (600L)

Simple. Safe. Effective
Discover the new 4-part Complete Reef Care, which offers aquarists more convenience at no extra cost and ensures optimal coral growth and vibrant colors with just one test per week!
Our long-term research has revealed that in most reef systems without refuge, major, minor and trace elements and even alkaline components are used in a relatively fixed ratio.
Since calcium is the key indicator of coral growth, the 4-part program is based around a single weekly calcium measurement, which determines the dosages for all 4 parts.
The new Complete Reef Care is available in 3 sizes, to suit all system sizes. It is formulated so that all 4 parts are used at the same time, and when supplemented with Red Sea ReefDose, the aquarist only has to set their calcium dose and ReefDose does the rest, which is very convenient.
The new Complete Reef Care program is chemically identical to our original 7-part program and provides the same excellent results. However, systems with refugiums must use Red Sea's 7-part RCP to properly maintain all elements.
Big pack
Ideal for a 160 gal mixed reef for approximately 3 months
Part 1 Calcium, Magnesium, Strontium and Barium - 67.6 fl.oz
Part 2 KH/Alkalinity and pH Stabilizer - 135.2 fl.oz
Part 3 Potassium, Boron and Halogens Iodine, Bromine and Fluorine - 33.8 fl.oz
Part 4 Iron, Manganese, Cobalt, Copper, Aluminum, Zinc, Chromium, Nickel plus 18 bioactive trace minerals - 33.8 fl.oz