I want to precipitate Phosphate from tank water in a marine aquarium. LaCL3 + PO4(-3) -> LaPO4 (insoluble crystals)
What mass of Lanthanum (III) Chloride (LaCL3) would be needed to reduce PO4 in 38 litres by 1 ppm?
And at room temperature what mass of LaCL3 could be added to 100 ml of pure water before it reaches saturation?
I did chemistry nearly 30 years ago and have lost all my knowledge. Any help much appreciated.