You don't get rid of them you just change (improve) conditions so they aren't blooming out of control.
Can you post a complete set of test results and if possible measure your lights with a light meter?
If you don't have a light meter, start with a downloadable free app lux meter. Post your results and we can make sure you're on the right foot with it! :)
In the long run a handheld lux meter cost less than $15, gives better readings, and it safer to use over your saltwater tank.