Seems to depend on where you are at
Butcher shop that makes sausages? Food preservative.
Maybe old time drug store.
edit - Sodium metabisulfite is what you want to ask for!
Grocery store solution:
A Vitamin C tablet crushed to powder will also completely neutralize Chlorine and Chloramine from water instantly.
Per reading on the internet.
http://en.wikipedia.org/wiki/Chloramine
Its an anti-oxidant and breaks the bond down in a similar fashion as camden.
Seems 1000 mg treats 75 gallons of water.
If treating the water solely for chloramines, will sodium metabasulfite possibly cause off-flavors due to the added sodium, or is there such a small amount that it is insignificant?
I understand potassium metabasulfite is recommended because there is no sodium added to the water, but is there really a problem with the amount of sodium?
In talking with the LHBS guy he said that you would need to add far more than the recomened serving to have a negative effect. I would say if you are adjusting your water, don't add any more Na though.
I am sure you could do the math on how many ppm it adds per gram or something... anyone....
Molecular is Na2S2O5
It's an insignificant amount IMO...
You can always use bottled water in a pinch as well.
My frst thought is that it has to be a very small amount.
My tap water is pretty good, since it is from a municiple source it must be treated for chlorine/chloramines. Plus I want to avoid paying for bottled water if I can, it's just another unnecessary expense.
Grocery store solution:
A Vitamin C tablet crushed to powder will also completely neutralize Chlorine and Chloramine from water instantly.
Per reading on the internet.
http://en.wikipedia.org/wiki/Chloramine
Its an anti-oxidant and breaks the bond down in a similar fashion as camden.
Seems 1000 mg treats 75 gallons of water.