Quote Originally Posted by waterbear
The Sodium bromide has created a bromine bank in your water. Every time you shock with chlorine the chorine is 'converted' into bromine until the bank is exhausted. Just keep shocking. This is why your chlorine is not holding. It is reactivating the bromine. I would be careful about overdosing on the sodium bromide because it can create a VERY LARGE chlorine demand. Just give it time to work and keep shocking unitl the algae is gone and your chlorine is holding. (and don't forget to BRUSH, BRUSH, BRUSH!)

BTW, this is not very different then running a spa on sodium bromide...sodium bromide is added to the water and then chlorine (usually bleach, cal hypo, or dichlor) is added to activate it. When the bromine level drops you add more CHLORINE to reactive the bromine!

Thanks...I am going to keep hitting it with chlorine..but yes it is gobbling it up. I would say i am going to be going thru 25 liters over 24hours for the second straight day. But i see no signs of the algae in the pool tonight..we'll see what shows up in the morning. Yes i am running the filter 24/7 and brushing often. Before adding the bromide I had no real clue as to how long it would take or that it would gobble the chorine...but thanks to you I now know what to expect.