Test Kits and salinity

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There are two API master test kits: FW & SW. If you're asking which kit to use for a brackish tank, I don't know. I'm curious to hear some other opinions.
 
Which test kit?
It may be best to all API or email them for an answer. Different checmicals will have different points at which the accuracy will fall off.
 
There are two API master test kits: FW & SW. If you're asking which kit to use for a brackish tank, I don't know. I'm curious to hear some other opinions.

I was actually wondering for when I do hyposalinity treatments using SW test kits. I know the nitrite kits works the same for fw/sw just the ammonia one I'm concerned about. I think I'll give the 1-800 number a call and see what I can find out.
 
The same API Ammonia kit is good for both freshwater and saltwater. The problem using it with hyposalinity is interpreting the colors. You have to kind of put both cards side by side and guesstimate what your color is.
 
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