I just learned that there is such a thing as something that adds pH to the pool automatically. I am thinking this would be especially good for when on vacation. Since my pool seems to need acid every 2-3 days and I already have some scaling this is of interest to me. I know I may have to change how much acid is being added to the pool if I am trying to adjust TA and still have to add acid to the controller, but I'm thinking the less I have to pull out acid from the locked shed and manage acid around my marbella stone along with vacations... this is sounding pretty good. Any postiives/negatives and info would be great. thx!