I've had bad experiences keeping peppermint and cleaner shrimp in the past because of how sensitive they are to salinity levels. In my new 90g (no livestock yet!), I really don't want to have the same problem! So, I've got a couple questions:
First off, when I do water top offs to my sump, I just use fresh RO/DI water (with no salt added). I have found that when I add salt to the top off water, it seems to increase the salinity of the display tank, even when I use top off that is mixed to an SG 1.022. Hence, I just use pure fresh water... when I do it this way, it seems that the SG in the display stays at 1.022, even though I'm adding fresh water and not saltwater. Does anyone else do this?
Also, for monthly water changes, I know I will have to premix salt into the RO/DI in order to maintain salinity, but again, in the past when I have done this, it seems to make the display SG go higher than 1.022 even when my fresh saltwater to be added is at 1.022. Any thoughts/suggestions from how others do this?
Thanks!
First off, when I do water top offs to my sump, I just use fresh RO/DI water (with no salt added). I have found that when I add salt to the top off water, it seems to increase the salinity of the display tank, even when I use top off that is mixed to an SG 1.022. Hence, I just use pure fresh water... when I do it this way, it seems that the SG in the display stays at 1.022, even though I'm adding fresh water and not saltwater. Does anyone else do this?
Also, for monthly water changes, I know I will have to premix salt into the RO/DI in order to maintain salinity, but again, in the past when I have done this, it seems to make the display SG go higher than 1.022 even when my fresh saltwater to be added is at 1.022. Any thoughts/suggestions from how others do this?
Thanks!