No livestock tank

[mrlowang]

I have a tank ive been topping off with rodi water and no salt but I check salinity today and it's off the scale. How. I'm so lost

 

[ritter6788]

Error in testing possibly? Really no other answer unless you used the wrong water to top off with.

 

[eatbreakfast]

^That's what I would think as well.

 

[Waters]

As others stated, as long as you are adding the same amount of pure RO/DI water that has evaporated, you will not see any changes in salinity (unless you have an enormous amount of salt creep, which could lower the salinity). I would think it a testing error.