WC while raising salinity?

jd371 · Dec 9, 2015

This past week I found that my Refractometer was off by .004 and I am now in the process of raising it with mixed ATO water. I do a 20g wc on a 85g total weekly. I don't want to raise the salinity too fast, so should I hold off on doing the wc until the salinity is where it needs to be or go ahead and do the change this weekend?

Randy Holmes-Farley · Dec 9, 2015

A 20 gallon change in 85 gallons of tank water at sg = 1.022 with new water at sg = 1.026 will instantly boost the 1.022 to 1.0229. I'd try to do two or more smaller changes rather than that one big one. Or just wait. Or use water that is only a bit above the current tank salinity.