Help finding algea cleaning tool

This might be a longshot , but a while ago someone posted some batter powered yellow brush tool they got at walmart to clean their glass. Does anyone remember the name? I've been searching and can't seem to find it.

 

It's the sonic scrubber. A while back they pretty much went off the market. I see amazon has them now. The one at walmart was marketed in the auto section and was yellow. Works ok on the glass, but I've found the best thing is a credit card.

 

Thank you! your a prince!

Yeah i actually use my blood donation card to scrape off stuff occasionally lmfao for some reason it works better than any magfloat or razor. haha.

 

Yep, magfloat destroyed the glass on my last tank when some sand got in it. An old cc is the best thing I've found if you don't mind putting you hand in the tank.

 

Here's what I use.

 

It's worth 2.63 right now.