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Hi all,

I was on another forum, and in one of their joke threads, there was mention of CLR-Clear.

I hadn't heard of it before. Is this the plastic cleaner that you can get at the car parts shops?

Is it safe to use on aquariums (i.e. won't affect silicone)?

I have a couple of large secondhand tanks with scaly glass that I'd like to clean.

I've used Sera pH down in the past, which is ok, but if there's anything better would like to try.

Cheers, Paul.

Edited by Paulochromis
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Hi Paul,

I wouldn't risk it personally. That stuff is very powerful. My mother used it to clean a coffee machine a few years ago, and it took about a month for the milk to stop curdling every time a pot of coffee was made.

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