In ULNS (Ultra Low Nutrient Systems) aquariums corals can have poor colouration and unhealthy if they are starved of available phosphate. Coral Essentials recommends using Coral Power Phosphate Up when you can not achieve the levels of phosphate to maintain a balanced carbon/nitrate/phosphate system. Coral will be more vibrant and colourful when nitrate and phosphate are maintained at correct levels. Coral Essentials recommends running your aquarium at a phosphate level between 0.01ppm and 0.05ppm.
Available in 100ml.