Will the "algae free hammerhead" be too much for a 75g?

[miserkris]

Will the "algae free hammerhead" be too much for a 75g?

About to get a used algae free hammerhead . Comes w/ razor attachment , says the seller. ( Price $40 ).

Will it crack the glass or be so-o hard to scrub on a 75g?

Or am I better off getting the piranha by algaefree?

Pls advice
Thx
kris:)

[bnumair]

The Hammerhead Float has a cleaning area of 4" x 2" and will turn big cleaning jobs into fast, easy fun. Its floating inner assembly will float to the surface if disengaged for easy retrieval.

This cleaning magnet is for use on glass
and acrylic aquariums 1/2" and 5/8" thick.

Glass Aquariums
110, 135, 150, 180 & 200 gallons
Acrylic Aquariums
48" long and 30" high

[bnumair]

The Piranha Float 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.

This cleaning magnet is for glass and
acrylic aquariums 1/4" and 3/8" thick.

Glass Aquariums
30, 45, 50, 55, 75, 90 and 125 gallons
Acrylic Aquariums
36" long and 20" high