Salt (not Adding Removing)

[loadsa]

Changing from my reef in a 5ft and sump to Tropical
Been emptied and refilled twice.
Still showing on my hydrometer that I have 1.002 specific gravity
and 2 salinity.
Want to put the substrate in and start the RO water filling. No doubt it will drop again but will it be enough to keep fish and plants.

 

[ox5477]

as far as I know, a tiny amount of salt will not harm most freshwater fish and will actually help stem some diseases. Hydrometers arn't very accurate also so your water might actually have less salt (but of course it could also have more too so idk). I would just continue to wash it out and wipe down the tank walls everytime its filled so any particles of salt will be absorbed and then be removed when its emptied again. But like I said, you shouldn't have to worry about it. over time the the salinty should drop to zero

 

[Rooster]

Scrub off any salt deposits... and fill her up, the only way to remove it all is by water changes... and I would forget the RO for freshwater.