So as many of you know (or should know) I'm setting up my 40 breeder at work. I filled it up and put my last 50# bag of Southdown sand into it on Friday. The pumps were all running and the closed loop was going. The sand had settled into a nice little pattern from the closed loop and was like that since at least Sunday when I checked on the tank.
So today I start adding salt to the tank. It's probably up around 1.017 right now, but I notice as the salinity rises, so does the flow patterns in the sand. I know that saltwater will flow through a sump differently than fresh, but I guess it never occurred to me that it would flow around in a tank differently.
Eric