Nitrate & Phosphate remover Red Sea NO3:P04-X NOPOX Red Sea 1 Review(s)  £9.87 Red Sea NO3:P04-X or NOPOX is the most popular solution for a controlled nitrate and phosphate reduction in the marine aquarium setup, for an improved coral growth and correct nutrients level to keep macroalgae but avoiding unwanted micro algae in any reef or marine fish system. Add to cart