How soon after putting muriatic acid in your swimming pool can you swim?

Our pool guy comes in the early afternoon/late morning every Monday. I check the pool PH around 5 pm, and the readings are all right on.....so I would say five hours? That's our pool, though, I would get one of the PH testing kits you can get at pretty much any pool supply store.Hope this helps!Mrs. Gregory

Answer

Our pool installer told us to wait 3 hours after adding acid to the pool. We use the liquid form, so I don't know if the wait time is different for other forms.