PerceptivePesce Posted January 13 Share Posted January 13 I read somewhere that fluval Ca tests may register results for freshwater. I got a color change so I think it worked! However, the units of measurement fluval uses is mg/L, and I only understand PPM. Is there a way to convert mg/L into ppm? I tried a Google search but I'm getting conflicting info, plus I don't quite grasp what I'm doing. 😁 The results of my test: After adding #2 reagent the water turned hot pink. After adding one drop of the last reagent, #3, the water color did not change. After adding the second drop of reagent #3 the water turned purple. The instructions say to multiply the number of #3 drops by 20mg/L. So I have 40mg of Ca in 340 Liters. What's that in ppm? (I added the "hot pink" distinction because the provided color chart shows a pastel pink. Because of the hot pink I'm thinking a multiplier of 1.5 may be more accurate? ) Help! 😱 1 Link to comment Share on other sites More sharing options...
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