Originally Posted by RoOfDiVr
My salinity level was getting high so I added RODI
water no salt in it... Should I gradually add it in or just get it to safe levels all at one time?
Why was your salinity getting high? I'm assuming here, but are you doing top offs with salt water? If so, only use RODI
for that. Evaporating water leaves salt behind, and the salinity will raise. If you top off with salt water, this will increase salinity, not bring it back down like it does with a RODI
In terms of getting it back down, I would slowly remove tank water an replace with RODI
over the course of a few days, maybe even a week.