Other than a razor, does anybody know of good algae scrapers?
A 6" wallboard knife works good, just be careful around the seams. The same goes for wallpaper scrapers.
I use a potato chip bag clip with a paper towel folded up & clipped for wiping the bottoms of fry tanks.
You can make your own micro food for fry with an electric coffee grinder. It turns any flakes or pellets to an unbelievably fine powder.