Correct salinity -DKH, CA and MG dropped

[WhatCouldGoWrong71]

Today I tossed my pocket Hanna salinity checker. I used my glass bobber and my Milwaukee tester to confirm I allowed some drift to take place. My salinity got to 1.028 (corrected), not insanely high but still above target. When I corrected the salinity over about a 6 hour period, the MG in my 170g tank dropped 90 points and my 65g tank dropped 120 points.

DKH - dropped 40 (basis) points in the big tank and 60 in the smaller

CA - gained 40 in the larger lost 40 in the smaller tank.

The MG drop really caught my eye. Was that salinity drift bigger than I thought? Did correcting it have a bigger impact than I thought?

 

[PharmrJohn]

Well, I learned something today. I think you're cool here. Check out this thread. Can't believe how relevant it is!!!!

Thread 'Need to raise salinity, what else will the affect?' https://www.reef2reef.com/threads/need-to-raise-salinity-what-else-will-the-affect.641196/

 

[WhatCouldGoWrong71]

Well, I learned something today. I think you're cool here. Check out this thread. Can't believe how relevant it is!!!!

Thread 'Need to raise salinity, what else will the affect?' https://www.reef2reef.com/threads/need-to-raise-salinity-what-else-will-the-affect.641196/

Wow. That’s pretty wild. Thanks for the link.

 

[gbroadbridge]

Today I tossed my pocket Hanna salinity checker. I used my glass bobber and my Milwaukee tester to confirm I allowed some drift to take place. My salinity got to 1.28, not insanely high but still above target. When I corrected the salinity over about a 6 hour period, the MG in my 170g tank dropped 90 points and my 65g tank dropped 120 points.

DKH - dropped 40 (basis) points in the big tank and 60 in the smaller

CA - gained 40 in the larger lost 40 in the smaller tank.

The MG drop really caught my eye. Was that salinity drift bigger than I thought? Did correcting it have a bigger impact than I thought?

1.28 *is* insanely high salinity - I think you meant 1.028.

I'm not sure what you mean by points - do you mean ppm?

 

[WhatCouldGoWrong71]

1.28 *is* insanely high salinity - I think you meant 1.028.

I'm not sure what you mean by points - do you mean ppm?

lol, yeah it was late. 1.028, I’d need a shovel to stir that mix at 1.28, lol. For points yes ppm/ppb/pp now I have to go.

 

[PharmrJohn]

Wow. That’s pretty wild. Thanks for the link.

Right? I thought it was pretty cool!

 

[WhatCouldGoWrong71]

I probably should have done it over a few days but it is what it will always be.

 

[PharmrJohn]

Should be fine. It's only .002.

 

[Randy Holmes-Farley]

Today I tossed my pocket Hanna salinity checker. I used my glass bobber and my Milwaukee tester to confirm I allowed some drift to take place. My salinity got to 1.028 (corrected), not insanely high but still above target. When I corrected the salinity over about a 6 hour period, the MG in my 170g tank dropped 90 points and my 65g tank dropped 120 points.

DKH - dropped 40 (basis) points in the big tank and 60 in the smaller

CA - gained 40 in the larger lost 40 in the smaller tank.

The MG drop really caught my eye. Was that salinity drift bigger than I thought? Did correcting it have a bigger impact than I thought?

I cannot answer without knowing how low you dropped the salinity, but a drop from 1.028 to 1.026 will drop everything by 7.1%. For magnesium at 1300 ppm, that drops it to 1207 ppm.