How to remove water stain on the tank?

[williamng]

Hi

There are stains at the rim of the tank which is difficult to remove. Anyone knows how?

Regards
William

[dc88]

Those stain are calcium carbonate salt deposit. Try wipe with tissue soak with vineger (after lower the water level).

[kemp]

alternatively, you can use a razor to scrap them off

[williamng]

Hi

Thanks! is it very difficult to remove?

[kemp]

wet them first, then it will be relatively easy to scrap them off

[joelwong]

There is a rank cleaning spray by JBL available at polyart, pretty good, supposedly harmless to fishes

[dc88]

alternatively, you can use a razor to scrap them off

Make sure your razor blade is not rusty and apply force evenly, as it will scratch the glass surface if not handle carefully.
I swtich to a plastic scrapper (bought from DIY shop) which is more glass-safe.

[hwchoy]

just buy a lemon and use the juice. works wonders. the fishes even seem to like the taste.

[williamng]

Thanks! I also wants to clean the back of my 4 ft tank. However, it seems difficult to access as the back of my tank is facing the wall. Anyone knows any equipment/ tools that can access to it?

[celticfish]

any window cleaner will work for the face outside of the tank.
you can use newspapers to wipe so you won't have fibres sticking to the surface.