I had a terrible case of black algae on a Pebble Tec pool. I worked through about 2 weeks of Leslie's pool center help until finding this site. I bought my TF100 test kit and have been SLAMMING since last Friday. The pool is really starting to look great. I have a SWG and my overnight FC test actually increased by have a point. I planon running the test tonight with the SWG off. Here is where things get interesting. I have been brushing algae away for the last two weeks like a mad man. I have a 30" black algae pool brush(metal bristles) and a rubber bristle hand brush that is very rough. I have been putting on a diving mask and brushing any algae spots. There are a handful of spots around the pool I can see the algae is below the Pebble Tec but the brushes aimply can't reach it. Do I need to keeping SLAMMING until it dies or will maintaining a post SLAM FC rate of 4ppm be enough to stop the algae from activating again? I'm also planning to add the borates once this process is complete.
Thanks in advance!