Can salt go bad?

Kristin

In my apartment, the humidity is around 50-60%, I have a small child, and I use a humidifier. I bought salt in a Tetra package, and after opening it the next time, the salt had hardened. Recently, I bought a Ca Ptero test (I read that everyone praised it), and it showed 300 ppm in the aquarium, while I measured 350 ppm in freshly mixed water. Now I'm thinking either the tests are wrong or the Tetra salt has gone bad and needs to be replaced. The Ca/Mg content in Tetra salt was 450 ppm/1350 ppm a year ago when I had a 150L aquarium. I measured it then with JBL. What does everyone think about this? Tomorrow I will ask the locals to test my water with other tests.

Mark

If moisture gets into salt, it spoils because its components start to react with each other.

Cindy

I received the tetra right away in a somewhat spoiled condition, bought it at Akvaria, the salt that arrived was also a bit hardened, the pump mixed it for a day, but it still didn't dissolve completely, calcium precipitated out, even though the packaging was not damaged.

Leonard

No matter how many times I measured with these tests, it was always 380 in the theater... No, it has 450. There is in the red sea.

Kendra2262

Dissolves quickly and there is no sediment. Why would I need such salt when there isn't even 400, I'll look for another one. In general, I was wrong to criticize the manufacturer Ptero, I need to apologize.

Kevin3579

Yesterday I bought 1 kg of Aquamedic reef salt and 0.5 kg of Tetra dry for testing, here are the readings: Tetra KH 6 Ca=380 AM KH 10 Ca=420 Aquamedic bulk 43, Tetra 42.

Diana8604

Tetra salt, Kн-10 tetratest, Ca-500 tests for ptero are not designed for that salt, and Aquamedic should only be measured with their tests!!!

Melissa2062

Was the density/salinity the same?

Barbara

Do they have their own tests?

Brian7092

I haven't worked with Aquamedic salt and probably won't. I've been using Tetra salt for 5 years (only 20 kg buckets) and the latest tests showed Ca 420 ± 0.5, temperature +26 measured with two tests.

Ronald

This topic needs to be deleted, it only leads to confusion. I don't even remember if the density was the same or not. By the way, Ptero is a normal test for Ca, I compared it with Salifert. I don't use Aquamedic, I just took 1 kg for testing.