Would like recommendation for good defoamer.

We are using bromine tabs in our hot tub and shocking with liquid chlorine bleach weekly. Initially we made the mistake of using the splash-free laundry bleach which caused tremendous foaming, to the point where it was flowing over the sides of the spa. We have since switched to concentrated (10%) liquid chlorine from a pool supply store. Unfortunately, we still get foaming immediately after adding the chlorine. I have gone online to Amazon to find a good defoamer, but there are lots of...

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