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Discussion Starter · #1 ·
Hello to all,

I recently have seen a test for Ca at my lfs. But on the package it says that the test is for marine aquariums. So I'm not sure if I should buy it or not. Does anyone of you have any idea that Ca test for saltwater may also be accurate for freshwater too? Test is from Sera and performed by counting the 3rd solutions drops until te mixture changes color.

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