Best magnet/scraper for curved glass?

[mskvarenina]

So my tank is up and running and it's time to start cleaning the glass. My tank is a seamless bow so I need something that I can also use on the curves.

And recommendations?

 

[troywalkerphoto]

An old credit card! Seriously! Try it! no scratches. Wish I knew b4 magfloat

 

[tangmaniac]

Tiger shark magnet best one I used so far !

 

[ddssolo]

I use the Flipper with no problem on my 54 gallon.

 

[ChrisB]

http://www.robosnail.com/

 

[mskvarenina]

I've seen that but I'm unsure if it will go around my seamless bow and curved edges.