Tank and Algae

[lalla197k]

Hello,
I just installed a used 125 Gallon fish tank. The person who owned before me, scratched the inside of the tank, and now algae is stuck between those scratches, it is hard to remove. What are your thoughts. Thank you
By the way, I am new to this. I have never had saltwater tank before, but I am learning gradually. [emoji4]

 

[Unknown]

How deep are the cracks? If they are not too deep you might be able to clean them with a sponge or something in that nature.

 

[lalla197k]

It looks like they are a little deep, I think I have to immerse my hand in the tank with a sponge and scrub them.???? Because I tried the long brush, but it did not remove them
Thank you

 

[Unknown]

Yeah you might need to use some elbow grease and make sure the sponge is getting into the cracks

 

[lalla197k]

I will, thank you

 

[Tab28]

Heard this is an issue with certain aquariums if you use a razor blade scrapper.