Let's do a experiment.
Take a 1/2 gallon of tank water, add a gallon of fresh saltwater to it.
Then test. (Dulute if no change after first test.)
Why do all the trouble and waste of 150gal. water changes til you see what your levels are.
Take a 1/2 gallon of tank water, add a gallon of fresh saltwater to it.
Then test. (Dulute if no change after first test.)
Why do all the trouble and waste of 150gal. water changes til you see what your levels are.