I use a Mag Flip, it is a combination scraper and the ever popular Mag Float cleaner... It works great, with a tank that is almost 3 feet high, I cannot use the ole razor blades.
And I do have a extra, brand new one... JL Aquatics sells them for $40, I will let it go for $25 if anyone wants. Calgary and area only please. This has never been used and still is sealed, it was a gift, but I already had one.
http://www.jlaquatics.com/product/cl...m+Cleaner.html