apinkmanatee
Aquarium Advice Activist
Is there any reason why my specific gravity would be slowly decreasing instead of increasing besides that my refractometer is not giving accurate readings? About 4 days ago it was 1.025, and over the last few days has slowly been going down to 1.023. I thought it was supposed to rise over time and I would top off with fresh water. Are there any tips to using a refractometer that maybe I'm not aware of? I used distilled water to calibrate, and have recalibrated a few times. I clean it off after every use. What else?