Where to buy Calgon "water" softener?

[camshaft]

Looking to pick up a btl to use in black and grey holding tanks for a rv. Anyone know common places to pick this up?
The "fabric" softener is everywhere, but the "water" softener is harder to find.
Thx

[camshaft]

anyone....?

[bisonhunter]

two minutes on google found this website of the manufacturer. It's a starting point anyways.

http://www.takemeaway.com/where-to-buy/

[coreya3212]

I am curious what it does to your black and grey tanks? What's the advantage of adding to black or grey water tank?

[bigdaddy37]

Adding a cup of calgon to 4L of water after every black tank dump helps keep thinks from sticking to the sides and sensors.

I get my calgon from wal-mart or canadian tire.

[coreya3212]

Good to know. Thanks.