The Piranha Float Plus 

The new "Plus Series" has a detachable and replaceable scraper blade for glass (stainless steel) or acrylic (plastic) aquariums and will make algae cleaning quick and easy. With its large 4" x 2" cleaning area and extra strong magnets it will zip through the toughest of algae. Its floating inner assembly will float to the surface if disengaged for easy retrieval. 

Glass and acrylic aquariums 1/4" and 3/8" thick

Glass aquariums holding 30 to 125 gallons

Acrylic aquariums 36" long and 20" high

Contents: One outer wood piece, one inner floating scrubber with velcro, one plastic scraper blade for acrylic, one stainless steel scraper blade for glass aquariums, one white acrylic-safe cleaning pad and direction card.