nitrates in saltmix?

[swissgaurd]

i never hear of anyone testing there fresh saltmix for nitrates

does anyone do this
can someone test there fresh batches for nitrates and what test kit did you use.

thanks
vic

 

[spscrazy]

I have tested instant ocean and tropic marin with Api and salifert. Both were zero.

 

[swissgaurd]

good to here
any other saltmixes out the tested for nitrates