How to remove dried up algae inside tank

[Eyeguy05]

whats the easiest and safest way to remove the dried up algae on a recently drained tank? I tried a scraper but I don't want to scratch the glass.

 

[DiscusnAfricans]

A razor blade. Its pretty hard to scratch the glass if you scrape at an angle and don't press directly into the glass.

 

[Eyeguy05]

I'm thinking about spraying vinegar and letting it sit for several mins than using the razor blade.

 

[chriscoli]

If the tank is empty, you can also try a product called Barkeeper's Friend. It's got a little bit of scrub, and will remove hard water deposits. It's safe for glass and rinses well. Just make sure you completely rinse it out when you're done.

 

[Rasta Fish]

If this this fresh water fill it up with water and clean with a scrubbie pad it once its soaked ...
If this is saltwater then you may need other stuff i have used detergent to remove saltwater algae

 

[domdes]

vinegar

 

[stany]

I used a $2.00 auto inspection sticker remover from Pep Boys with a razor blade to clean a couple year old tank that was left to dry out by my stepson. Spraying a little water on it seemed to help. I still use this to remove any new outbreaks.