Red sea nitrate pro water level

[Esquire805]

Ok I have watched videos and the 15ml looks so high, but when I put 15ml uta half the bottle. Am I doing something wrong

 

[Potatohead]

Your bottle looks larger than the older ones

 

[Esquire805]

Your bottle looks larger than the older ones

I got the refil by mistake but had old vile st home so I used that but I found another syringe that made it look like the videos

 

[Esquire805]

Your bottle looks larger than the older ones

used bigger vile mu nitrate is high o doser yo much