I started up my QT tank this after noon kinda. I ran my RODI water Sunday in order to make enough for my QT. So I mixed up 10 Gals. and added the 1/2 cup of salt per gal. per label instructions. My question is, when should I check the salinity & s g? After a couple hours when things are mixed? I have a heater & a 120 Power head for mixing. My Initial salinity reading was 1.026. I do have more RODI to dilute the solution if needed.