carbon
Aquarium Advice Apprentice
I was just wondering, if I am doing a water change and I mix my salt with cold RO water (60 deg F) and bag salt how do I tell what the specific gravity of my water is relative to the water in my tank at 75 deg F. (1.022 grav) I followed the mix instructions and my salinity seems to be 1.030 with the water/salt mix, a bit salty I belive? furthermore am I shocking my fish/ coral by doing a change that cold at 10 percent the total volume?