Are you saying there's now a calcium test for freshwater tanks? The only calcium test I've been able to find by API has been for marine tanks. I'd love to be able to determine the amount of calcium available to my snails in my freshwater systems, but haven't found any tests that would show that.
So, is this something new put out by API?
20 gal. high: planted; 7 white cloud minnows, several RCS, 2 blue shrimp, 5 Amano shrimp, several snails; AC50, Azoo air. 65 gal: planted; 7 rosy barbs, 3 yellow glofish,, 3 zebra danios, 1 rosy red (fathead) minnow, 5 white cloud minnows, 3 dojo loaches, 6 crimson spot rainbow fish, several snails; AC110.