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This is not about making clean saltwater for livestock or a tank.
This is to be able to create Saltwater for chemical tests and calibration. For these tasks it's useful to have a saltwater that you can be confident will have "zero" of some tested quantity, while having background chemistry in line with Tank or Seawater.
Here let's define "zero" as at least one (two is better) order of magnitude below lowest Level of Detection of hobby test kits.
Distilled + Salt mix doesn't pass that bar for lots of things. You can sometimes detect NO3, PO4 etc in fresh mixes.
Things I might want to be "zero": N (as NO3, NO2- NH4 etc.), P, Si, I, Fe.
RO/DI + table salt feels like not a very good approximation of saltwater, and getting a hold of all these seems daunting and unnecessary:
Are there simpler solutions I'm missing? Does anybody make a saltmix that is intentionally blank of all the useful nutrients/metals - doubt it - people would kill a lot of livestock with that.
This is to be able to create Saltwater for chemical tests and calibration. For these tasks it's useful to have a saltwater that you can be confident will have "zero" of some tested quantity, while having background chemistry in line with Tank or Seawater.
Here let's define "zero" as at least one (two is better) order of magnitude below lowest Level of Detection of hobby test kits.
Distilled + Salt mix doesn't pass that bar for lots of things. You can sometimes detect NO3, PO4 etc in fresh mixes.
Things I might want to be "zero": N (as NO3, NO2- NH4 etc.), P, Si, I, Fe.
RO/DI + table salt feels like not a very good approximation of saltwater, and getting a hold of all these seems daunting and unnecessary:
Are there simpler solutions I'm missing? Does anybody make a saltmix that is intentionally blank of all the useful nutrients/metals - doubt it - people would kill a lot of livestock with that.