Found my live rock is leaching phosphates so with the helpful insight from cody I will be using some lanthanum chloride in a seprate tote to slowly leach it out. He recommended phosfree but all I could find was Leslie's no phos which appears to be a slightly more concentrated version of phosfree by the same company, natural chemistry. I'll be using Cody's gifted icp test once rock is done in about 2 weeks to see if there's any additives from the brand of phosphate remover. Has anyone else ever used this before?