Salinity meters/hydrometers

[Snaz]

Originally Posted by BCOrchidGuy

I think it is a coralife but the paper insert must have moved because it was floating higher than it should have been.

If you suspect the paper has moved in any hydrometer, chuck it out. Useless.

Any good glass hydrometer will have a green or red mark on the inside of the glass that matches same mark on the paper. If they don't line up then the paper has moved. Chuck it.