How to get rid of stubborn algae

[willforr]

Anyone know what’s the best way to get rid of this really stubborn algae off my glass. The algae scraper I have doesn’t do anything

 

[defasum]

Are you using a stainless steel blade attachment on your algae scraper? I have a flipper and it removes anything including Coraline algae from the glass

 

[willforr]

I use the nano flipper, I’ve tried both sides

 

[defasum]

it must be the magnet strength then.
the 2 sides are VERY hard to separate if they come together with nothing between them.
the bond is VERY strong

 

[HomebroodExotics]

razor blade

 

[jda]

Get a hand held scraper with a metal blade.

 

[z0mbeh]

If the magnet isn’t strong enough you can manually use the metal scraper on the really stubborn stuff.