No. That is for very severe cases of algae that don't respond to the 'normal' shock level. You might want to post a current set of water testing results taken with a drops-based kit for us to look at. Also tell us what all you have used in your pool -- meaning ingredients, not product names.

Do us a favor, please. To make it easier for us to help, if people will create a signature line with their pool specs, it keeps us from having to reread through posts to find out basic information. You can create a signature by clicking on 'settings' in the upper right-hand corner of the homepage. In your sig, please put type of pool, volume, type of filter, size of pump, whether or not you have a SWCG or any water features and the fact that you do or do not have a K-2006. Thanks!