Mix station in a HOT garage?

[atnet360]

Have you tested any other parameters? like Calcium and Magnesium?
If it's only the Alk, then baking soda would be an easy fix to bring it back to where you want it.

Just did

Baseline for the experiment:

5 gallons of HW-Marinemix, mixed for 24 hours at a temperature of about 76 F

Salinity = 1.025
Alk = 8.1 dKH
Ca = 460 PPM
Mg = 1400 PPM

These numbers are pretty close to what BRS says this salt should be. Going to leave it in the hot garage for a few days and then re-test and see what happens.

 

[atnet360]

After a week in the hot garage during some of the hottest weather we've had all year, I took the bucket in last night.

I could already tell things were bad Sue to the amount of precipitant in the bucket:

The temp was about 96° F went I brought it in. I left it overnight to cool down.

This morning, with the temp about 76° F, I retested the parameters:

Salinity = 1.026
Alk = 6.9 dKH
Ca = 430 PPM
Mg = 1310 PPM (I'm terrible at reading this test so this could be an anomoly)

Needless to say I want be keeping saltwater in the garage anymore .

 

[TMB]

You can do what you want, but I don't see this as a problem. Water changes are not a good way to keep parameters stable - and normally have an insignificant impact on the system (unless the % of WC is large - and #'s are way different). What Alk are you trying to keep?