How to remove green stains on glass

[cyberpig]

I have some very stubborn green algae stains on glass that I can't seem to scrape off. How can I remove them? I am using this Kent Marine scraper with a metallic (aluminum?) blade. I can easily remove those normal algae growth but not on these stains. Any suggestion?

[Gouldian]

No other way bro, but good old elbow grease...

[akina28]

hmmmm i use my nails to slowly scrape it off... cos i scare those blade will scratch my glass..

[clownfish_forever]

If you have unwanted credit card, or other card of similar materials - those are quite useful to scape off the stubborn algae. It works for me.

[tamama]

There is this 3M sand paper for fish tank. It is not really as rough as a sand paper, so it wont scratch the glass at all, but it is effective in cleaning the green algae stain on glass.

[dnsfpl]

anyone tried melamine foam?

[ryanlio]

anyone tried melamine foam?

Melamine works great on my acrylic.. $2 daiso

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[CFOh]

works great with acrylic as well.. Cheers,,

[artxakis]

im not too sure wat im doing is the right thing but i haf been using cheap toothbrushes to scrap those harden green algae on my glass wall and esp on those convered by the sand bed. but maybe a small spot a day bcos really makes the tank dirty

[Firestarter]

Best to do scrapping of glass while doing WC.

For me I use an unwanted credit card material and scrape the glass in an upward direction, then siphon it out the algae so it won't spread.

[lazydevil]

Unwanted Credit Card is a good idea to go about it.

[Qun77]

If you have unwanted credit card, or other card of similar materials - those are quite useful to scape off the stubborn algae. It works for me.

Thumps up for the unwanted credit card; works really well for me too

[sol]

Agree. Unwanted credit card or infact any card should do the job. Just scrap harder and the sign of stain should be gone. Quite a bone breaking chore though...if an extensive area is affected.

[lazydevil]

I find that using the rough side of the sponge (one which we use for dish washing) rather useful. And yes, its quite a tedious process

[sty68]

Been using blade to clean them.The same way to remove tint from car.So no way it get scratch.

[Snoopyhamburger]

Scrape

[Jonathan75]

i use the flipper magnetic cleaner and works well for me.