Pool has been open for over a month. Water is balanced and has been very stable once SWG was locked in. Today I was using my goggles, our pool is about 29ft end to end. I got to say that I could see to the end and it was so clear it appeared that there was no water. It is unbelievable. I seriously have a feeling that I will forget and take a breath while I am still submerged. It's scary how clear it is. TFP rocks.