3rd time trying to post this...Can you tell me if this is regular algae or mustard algae? Pool is clear and balanced but does not hold chlorine generated by my SWG. I opened the pool last week and it was covered with algae. This pictured algae has come back in the same spot and the same has happened in a few "harder to reach spots" Thanks!
![IMG_20170528_092540.jpg IMG_20170528_092540.jpg](https://www.troublefreepool.com/data/attachments/51/51046-83dc20834dbe1c53ef4ab6400f086ef2.jpg)
![IMG_20170528_092540.jpg IMG_20170528_092540.jpg](https://www.troublefreepool.com/data/attachments/51/51046-83dc20834dbe1c53ef4ab6400f086ef2.jpg)