Old used 29 gallon, stain removal help

[Umpa Lumpa]

Well I was given a used 29 gallon tank that leaks. I'm a pretty handy guy so I said why not, I'll give it a shot to resilicon it, and use it for a quaranten or maybe set it up as a second tank.

I've taken it completly apart and I'm going to paint the back pain of glass, but its got alot of hardwater stains on it that I can't get off. Its too big to soak in white vinegar, it just evaporates off. I've gotton a scotch bright pad and scrubbed a while (30 mins on a square inch area), thats not working. I've tried bartenders friend as a suggestion from a friend of mine but the stains are still there.

Any suggestions on what to use? I really don't care if it scratchs the glass, as I'm gonna sand it a bit so the paint will stick to it. Thanks

 

[Devilishturtles]

Bleach should work. Just make sure when you are done that you rinse, rinse, rinse, and then rinse some more just to be safe.

 

[pharmajoeves]

Use a bathroom tile cleaner. Rinse well.

 

[BillyZ]

hot water and a razor blade.

I would be uncomfortable using any kind of chemical cleaner.

 

[Hara]

I would still use the vinegar, it does not have to be soaked in it, just put the vinegar on a plastic mess pot scrubber or on the glass itself or even in a squirt bottle. This method has yet to fail for me.

 

[bound_for_obx]

You can also wet paper towels with vinigar and lay them up against the glass. This method allows the vinigar to absorb into the deposits.