I just finished a batch of saltwater ready for future water changes, it measured 1.028 SG
on 15 litres, so I added 2 litres of freshwater.
When I checked the SG
later on, it was at 1.020, surely I didn't dilute the salt by that much?
So, I decided to check my tank levels, my last measurement was taken 3 days after the salt was added to a new tank, left at 25c and constantly circulated, it read 1.024, I check today and it's saying 1.020?
My hydrometer is the glass type, that float's in the water, it has a thermometer type thing in the base of it, I assume this adjust the hydrometer to temperature as well.
I think my hydrometer is just messed up.