Something strange happened. I just mixed salt water using the same batch of salt from tropic marin i always use... and have used the same box before. I wanted to make this one a bit stronger so i added some extra salt to it. I wanted to make it about 45 ppm in order to bring up the overall salinity of my tank since it has deviated from 35 ppm a bit.
I started mixing about 2 hours ago and it looks like the salt has already dissolved but there is a layer on top of the water that looks a bit off and when i test the water it shows a very low reading of only a few ppm... even though i added enough salt to get it to about 45 ppm. Has anyone ever seen anything like this? I thought my refractometer might be off so i recalibrated it and still shows same reading. When i check my tank water it shows as 34 ppm as i expected so i don't think there is an issue with the refractometer.
I started mixing about 2 hours ago and it looks like the salt has already dissolved but there is a layer on top of the water that looks a bit off and when i test the water it shows a very low reading of only a few ppm... even though i added enough salt to get it to about 45 ppm. Has anyone ever seen anything like this? I thought my refractometer might be off so i recalibrated it and still shows same reading. When i check my tank water it shows as 34 ppm as i expected so i don't think there is an issue with the refractometer.