Turtle won’t stop being aggressive when i go near the tank

so my turtle keeps trying to bite me through the glass, and he’s never been aggressive in anyway so i’m a little concerned. whenever i walk near the tank he starts jumping up and i’m worried he’s going to hurt his nose :( this only happens through the glass, as soon as my hands are in the tank, he chills out, hes never once bitten me and hes a pretty chill dude in general, just not sure if i should be worried? he knocks into the glass pretty hard with his nose.

(also tank is cloudy i know, tank clean day is tomorrow)