Originally Posted by Jemzz1988
Hi guys I've just set up my marine 90L tank I have nothing in it apart from 2 small sized live rocks, I'm having trouble with the salinity. When I set it up 3 days ago it was at 1.025 it's now up to 1.030 I need the best advice to get it down again please
If your getting evaporation you wanna too off with RO
or distilled water. Remember salt doesn't evaporate so if your adding saltwater to top off then your gonna raise the salinity. When you get evap use the water mentioned above, that will keep salinity in check. Your probably going to have to top off everyday.
Also what are using to test the salinity?