> wrote in message
ups.com...
> Sand. Thow some sand in there with the cleaner and shake well. Also
> letting the carboy sit for a day full of bleach water might do it.
>
> Bob
>
>
> Steve Sauchinitz wrote:
>> I have a few carboys that over the years have some lime or film residue
>> inside. Clorox or CLR won't remove it. Does anyone know what I could try
>> to
>> clean these up with?
>>
>>
>> Steve
>

If bleach wouldn't remove the residue, try some hydrochloric (muriatic)
acid. Just don't mix it with any other chlorine-containing chemicals to
avoid release of free chlorine. HCl is the main ingredient in scale
removing products for bathroom (porcelain, glass) surfaces and it works
well. Get it from building supply store in tile/grout area, pool supply
store, etc. Neutralize with baking soda, keep it out of your eyes and off
your skin when concentrated.

Cal