Hello everyone. I am in Yelapa, Jalisco, Mexico. Near Puerto Vallarta. My pool was built two years ago and I have had problems that I believe relate to having to use triclor. Logistically it is very difficult to get large quantities of liquid bleach to my location as everything has to come by small boat. hence the triclor. Also, the bleach that I have found here does not list any percentages. I have a tf-100 test kit which I just got. Here are the first test numbers taken today.
Water Temp 90
Air temp 85
I have two questions: Is there a way to continue to use Triclor and not have my CYA levels get any higher? And to lower that level? Also I have included two pics. One is of some kind of growth in the grout that I just can't seem to get out? Any ideas or suggestions would be much appreciated.[attachment=0:wbge13b4]IMG_2906.JPG[/attachment:wbge13b4]