dosing ?

[donkey77]

new readings today
ca 550
KH/alk 8.3
Mg 1550
why are my par going up when i havent dose anthing yet, my alk is going higher should it be the other way around as in getting lower, i did change about 8gallons of fresh salt water 3 days ago, hmmm strange, will conti to test for the next 7-8 days, see where iam at