What is worng with my Boa?

[Dutti]

I personally feel 65% is a bit low since most people use cheaper hydrometer(myself guilty too) so the accuracy can be as much as 5-10% off which would mean a reading of 65% could really be 55-60%.
.

I paid for my hydrometer 24 USD. Its not a cheap one. I would say the accuracy can be as much as 2-3% off, not more.
I am taking him to the vet today, i will post an update after that.