these tests ok?

ust done a water test and me water show up as

p.h 8.2

ammonia 0 ppm

nitrite 0 ppm

nitrate 5 ppm

calcuim 440 mg

kh 161.1 dkh 9

phosphate 0.25

done a water change on thursday

change me phoshate remover but still can not get it to 0 any ideas anyone