What chemical to clean center bracing

[Aquareef123]

I have a 6-7 yr old tank and over the years has accumulated a lot of deposit on the center bracing. I have tried to use vinegar or even razor blade but unable to get them out. I believe these are hard water deposit over the years.

I searched the internet and in USA they use a product call "lime away". Is this sold in Singapore and is it reef safe?

Any other alternative to clean the bracing? I'm thinking to clean it during one of my water change where the water level is low.

Many thanks.

[ASHWIN]

I have a 6-7 yr old tank and over the years has accumulated a lot of deposit on the center bracing. I have tried to use vinegar or even razor blade but unable to get them out. I believe these are hard water deposit over the years. I searched the internet and in USA they use a product call "lime away". Is this sold in Singapore and is it reef safe? Any other alternative to clean the bracing? I'm thinking to clean it during one of my water change where the water level is low. Many thanks.

I've used warm water with sandpaper works fine bro..

[Aquareef123]

Bro Ashwin, what grade of sand paper? Thanks.