How much is the TDS increased if Borax is added to 50 ppm

[waterbear]

If my understanding of the chemistry involved is correct then inorgainic sodium bromide will eventually form bromates (which do not 'reactivate' into hypobromous acid) and then you will have a chorine pool again. It is the organic form of bromine found in bromime tabs that contain dimethylhydaytoin that sticks around forever.
Ben (PoolDoc) summed it up on this PoolSolutions page
http://www.poolsolutions.com/tips/tip10.html

Hope this helps.

[chem geek]

Thanks Evan. OK, according to Ben's post it sounds like the bromide can be removed with shocking on a sunny day, perhaps repeatedly. The organic form would have the organic part stick around and be hard to get rid of, but the Yellow Treat was just sodium bromide so didn't have the organic part. So that's good news.

So, smallpooldad, the fact that you were at high shock values after adding Yellow Treat probably means you got rid of most or all of your bromide, especially if your pool had exposure to sunlight. Wheh! That was a close call!

Richard

[smallpooldad]

Gentlemen,

Yes that was a close call and I thank you both for the detailed follow up.

This morning the chlorine is down to 10 ppm. Would agree with you that the bromide most probably got used up by those previous high levels of chlorine, thank goodness.

Aloha, and the weather is sunny with a few clouds at 78 F, relatively low humidity thanks to the trades at 10-15 MPH.