I Need Advice

[Peterrr]

As many tips as you got on cleaning an old tank, water stained.

And re-siliconing it.

 

[meguro]

Heavily dilute your cleaning agents.

 

[catpants]

As many tips as you got on cleaning an old tank, water stained.

And re-siliconing it.

I cleaned mine with salt and a scrubby sponge, then rinsed it very well.

 

[bauhaus]

Tetra do a scraper that has a very fine razor blade attached to it and it is the best thing I have found for water marks!

 

[waterdrop]

In between razor blade scrapes and the other suggestions above you can rub the mineral deposits repeatedly with pieces of lemon cut in half. Its not just the juice but also the hard rubbing with the inside skin of the lemon. There are reports that something in the lemon has a bit of an edge over vinegar and other diluted acids.

~~waterdrop~~