Stains on my glass?

[Matthew40b]

Hello everyone, so I have had this tank for almost three years now and as you can see in the video my front panel seems to have mineral build up or something which is very noticeable. The whole front display is like this and I have tried scraping it with a razor blades but it’s ineffective. Its also only the front panel which seems odd, but does anyone know how I can clean the inside of my glass without having to tear my tank down? Thank you!

 

[vetteguy53081]

Hello everyone, so I have had this tank for almost three years now and as you can see in the video my front panel seems to have mineral build up or something which is very noticeable. The whole front display is like this and I have tried scraping it with a razor blades but it’s ineffective. Its also only the front panel which seems odd, but does anyone know how I can clean the inside of my glass without having to tear my tank down? Thank you!
View attachment 2998826

Its either calcium precipitation or likely whats known as spirobid worms. With edge of an old credit card or similar, shave off into a net and discard