I'm having trouble with my Instant Ocean dip and fill hydrometer, and was hoping you guys could help.
My tank is 40 gallons, and is filled with RO water. I added my salt about a week ago, to approximately the right values. I intended to add a bit more salt to increase the SG to it's correct level. But the main problem is that every time I dip my hydrometer in the water, put it on a level surface, and tap it to dislodge any air bubbles, I get very different results - sometimes the needle goes right to the top, sometimes it goes to 0.020, sometimes to 0.023, sometimes to 0.024...and all this can even happen when doing the tests straight after each other, ie. 5 consecutive tests (rinsing thoroughly with freshwater before and after each test) often produce very different results.
Has anyone any ideas? :/
FYI:-
Eheim 2327/84 thermofilter, set at 25°C; 2 x Maxijet PH1200's.
Thanks,
Mark :?
My tank is 40 gallons, and is filled with RO water. I added my salt about a week ago, to approximately the right values. I intended to add a bit more salt to increase the SG to it's correct level. But the main problem is that every time I dip my hydrometer in the water, put it on a level surface, and tap it to dislodge any air bubbles, I get very different results - sometimes the needle goes right to the top, sometimes it goes to 0.020, sometimes to 0.023, sometimes to 0.024...and all this can even happen when doing the tests straight after each other, ie. 5 consecutive tests (rinsing thoroughly with freshwater before and after each test) often produce very different results.
Has anyone any ideas? :/
FYI:-
Eheim 2327/84 thermofilter, set at 25°C; 2 x Maxijet PH1200's.
Thanks,
Mark :?