Aquaforest probiotic method

[mrhasan]

Originally Posted by Myka

That's exactly what I was getting at when I asked how you were calibrating. I'm glad you found the issue.

Also, if your RO/DI isn't perfect, using it for the Hanna Calcium Checker will throw those numbers off too. I recommend using distilled water in the Calcium Checker.

Finger prints on the vials can throw off the numbers too. I used to handle those vials using napkins