Clean acrylic

[cichlid_tank619]

What is good to clean acrylic? I am worry about scratching it. I know they make a special scrapper but I was looking for like a microfiber?
Oh and I'm just cleaning off usual algae build up, nothing crazy. Thanks guys

 

[Mrc8858]

Old credit/gift cards work good as scrapers.

 

[Allenk]

Credit card works good for the easy stuff. For the tougher stuff u can get scratch free sponges at the grocery store. They have green ones and blue ones. The guy who told me about them said the green ones still leave little scratches but the blue ones work good. Why? I don't know but I have used the blue ones for a year and they work great. Some come with additives like the S.O.S ones. Don't get those. I still boil the sponges before I use them just to be safe. It's like 1.99 for two

 

[Allenk]

Here's a pic