Well, I just did.
First - For those of you who don't know, Borax is a very effective treatment for ant infestations. I have used Borax very successfully to erradicate ant colonies. It attracts ants like sugar and then it kills them shortly aterwards. It usually takes a few days before you notice the ants disappear because they live long enough to bring it back and feed the rest of their colonies.
That being said, yesterday I used Borax to raise my pH. My reading was about 7.0 and the pool calculator recommended about 4 lbs of Borax which I put in the pool. A couple of hours later, my pH was perfect at 7.5. Today, I went to check again and the pH was holding steady at 7.5 however, I noticed a great deal of large ants floating on the surface of the pool. There were even more in the skimmer.
The good thing is that since I know Borax kills ants, I don't expect this problem to persist but I was just curious if anyone else has ever noticed any ant problems after using Borax. I realize that the Borax disolves very quickly but I guess if you are in an area that is prone to ant colonization, that this will bring them out.