So this has happened the last two times I have made a batch of saltwater in my mixing bin using tropic Marin pro reef salt.
I employ auto water changes at a rate of 3 gallons per day on my Waterbox 180.5. I test sg in the display a couple time a week using a Milwaukee, as well as a standard atc refractometer. The last two times I made new batches of water in my mixing station, I heated the water to 78 to match my display, mixed the appropriate amount of salt until it it registered at 35 ppt (1.026-1.027), continued mixing for a couple of hours, then removed heat and turned off the pump. A week later (both times), I noticed the salinity in the DT had risen to 1.028ish. Upon checking the SW reservoir I had found, in both instances, that the salinity had risen to 1.030! Is there a simple explanation to this, and how might I prevent this in the future?
Full disclosure, I am using RODI, through (2) 7 stage units. The resulting mixed saltwater tested (in both instances) 35ppt after initial mixing and again 24ish hours later.
What could account for this raise in sg over an approximate week long period?
I employ auto water changes at a rate of 3 gallons per day on my Waterbox 180.5. I test sg in the display a couple time a week using a Milwaukee, as well as a standard atc refractometer. The last two times I made new batches of water in my mixing station, I heated the water to 78 to match my display, mixed the appropriate amount of salt until it it registered at 35 ppt (1.026-1.027), continued mixing for a couple of hours, then removed heat and turned off the pump. A week later (both times), I noticed the salinity in the DT had risen to 1.028ish. Upon checking the SW reservoir I had found, in both instances, that the salinity had risen to 1.030! Is there a simple explanation to this, and how might I prevent this in the future?
Full disclosure, I am using RODI, through (2) 7 stage units. The resulting mixed saltwater tested (in both instances) 35ppt after initial mixing and again 24ish hours later.
What could account for this raise in sg over an approximate week long period?