How do you clean curved glass corners?

[Trailermann]

My JBJ Rimless 30 has curved glass corners. Neither razor nor felt scrapers can get into this space. I would rather not hang my arm into the tank with a 3M kitchen scrubbie. Beside that, the scrubbie does not remove well established algae easily, if at all.
Recommendations please.

 

[nautical_nathaniel]

 

[nautical_nathaniel]

Seriously though, I would try an old gift card/credit card. I know I got a ton of dedicated aquarium scrapers at MACNA that would have been perfect for that style tank so maybe you could find one of those or a similar item somewhere online.

 

[Krzydmnd]

I have a biocube 32 with rounded corners and found the tunze Care magnet cleaner to be perfect. You can push the blade into the corners to clean, it will raise away from the dry side magnet, but it's strong enough to get the corners without dropping off into the tank. I love it. Best thing I've found.

Juat push it over the edge Like this..

I juat wish it floated because it will sink if you lose magnetic.