I've read your suggestions about aeration raising pH, but my return jets (2) are in the bottom of the shallow end (on wall, right along the bottom) and they do not have nozzles. They are open holes. There used to be plates over them, but the fixture they screwed into had rusted out. I don't know when this pool was built... but it's old! I can't imagine utilizing the returns for anything that might promote aeration. Kids would be my best weapon, but the pH seems to be holding steady at 7.2 these last couple weeks. I'm not sure they are helping (or swimming!) enough, so if you have any alternative methods of creating aeration... I'm all ears. I will try to think of something as well. Thanks, Carl.
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