How do you keep your curved edges clean?

[alpinestar]

Have a 17g with curved edges, the magnet cleaner I have won't reach into the curves and the little green filament algae scraper on a handle I have doesn't seem to cut it either. Obviously the razor blade scraper won't work. Any tips?

 

[hdsoftail1065]

My wife's biocube has curved edges. I use an old credit card or a algea pad both work pretty well.