stevedola
Master of my domain
its hard to tell, but flow and calcium levels can do crazy things to SPS. I cant put my finger on it but 1 thing I know is that my alk, calc, mag, + No3, are all consistantly stable and in good ranges. I do have some fluctuations in my ATO...sometimes my topoff is slow to keep my sump return level consistant but I cant imagine that my sg moves any more than .0005.