salifert kh and Ca test are fine...
redsea PO4 test is fine, but a measured 0,12ppm is in reality 0,08ppm.
in the useable lowrange (0,00-0,16ppm) just substract 0,04ppm.
anything higher than that is not interesting to measure so precis. At higher po4 than 0,1ppm (real value) you just need counter measure te be taken...
redsea PO4 test is fine, but a measured 0,12ppm is in reality 0,08ppm.
in the useable lowrange (0,00-0,16ppm) just substract 0,04ppm.
anything higher than that is not interesting to measure so precis. At higher po4 than 0,1ppm (real value) you just need counter measure te be taken...