Calcium results?

[tmccaff]

I checked my test kits with reference solution:

reference solution 422 mg/l

Salifert read 390 (-32)

API read 396(-26) each drop is actually x22 I read somewhere even know instructions say x20 per drop.

When I read my tank Salifert read 420; API Read 418 now is my actual reading between 388-392? taking off the results of known solution?

Now mastertronic read 410 as well.

Just so people aware that API instructions say it x20 per drop but its actually closer to x22 per drop is why a lot of people probably weary of API.

 

[blaxsun]

Or that API test kits just suck in general...

 

[tmccaff]

Actually API is accurate but instructions suck

 

[Dan_P]

I checked my test kits with reference solution:

reference solution 422 mg/l

Salifert read 390 (-32)

API read 396(-26) each drop is actually x22 I read somewhere even know instructions say x20 per drop.

When I read my tank Salifert read 420; API Read 418 now is my actual reading between 388-392? taking off the results of known solution?

Now mastertronic read 410 as well.

Just so people aware that API instructions say it x20 per drop but its actually closer to x22 per drop is why a lot of people probably weary of API.

It kinda sounds like the differences don’t matter to the coral, right?