best test kits for Ca and Mg?
 

As the title says what do people recommend as the most accurate test kits for Ca and Mg?

I have an Elos Mg kit that is giving me a reading of somewhere around 1050 for Mg in a freshly mixed batch of D&D H20cean salt at a SG of 1.025 and temp of about 78. That seems a bit low as I thought this salt should be higher.

I use salifert for both and I am happy with them.

I use Salifert and Elos, but IMO they all suck.

i like the api tests

Ditto. Although I have been putting more faith in Elos kits lately.

I wouldn't be surprised if your magnesium is 1050 ppm out of the D-D bucket.

I use Salifert for both and I am happy with them.

I have used the Elos test kits as that is all J&L sells, however the last couple of test kits the fluids ran out rather prematurely and I only got about 30 tests per kit. I then switched to Salifert from OA.

Tom R

Sounds about right. I gave up on the premium salts for this very reason. I got the same reading for D-D myself.

IMO Elos and Salifert are about the best bets for Mg. But as stated already, all test kits generally have their own pitfalls.

Okay, sounds like it is the salt and not the test kit that is off. I thought the H2Ocean was supposed to have Mg around 1300 :cry: I guess not. Probably time to buy some bulk supplements and switch to IO when this bucket is done.