btldreef
Moderator
Originally Posted by GeoJ
http:///forum/post/3195300
I also use Salifert. Because Salifert is harder to use I had to test more then once till I got 3 readings that were the same. This may be why you could get different numbers from one kit to another. If the kit is harder it takes longer to become consistent and with calcium that is what maters. You reference the calcium number to the growth you get from the corals so if you are off by 10ppm it really does not make any difference. When I only need to be between 420-500ppm I will use the cheep API if I need more precision then I use Salifert or some other.
Fair enough. The API is definitely easier to use than some of the others. When we test for calcium with the Red Sea Pro or the Salifert kits, it takes my husband and I both to do it properly.
http:///forum/post/3195300
I also use Salifert. Because Salifert is harder to use I had to test more then once till I got 3 readings that were the same. This may be why you could get different numbers from one kit to another. If the kit is harder it takes longer to become consistent and with calcium that is what maters. You reference the calcium number to the growth you get from the corals so if you are off by 10ppm it really does not make any difference. When I only need to be between 420-500ppm I will use the cheep API if I need more precision then I use Salifert or some other.
Fair enough. The API is definitely easier to use than some of the others. When we test for calcium with the Red Sea Pro or the Salifert kits, it takes my husband and I both to do it properly.