Algea at bottom of pool Robot wont pick up!

[pepsi mom]

i suppose I am having a similar problem I had algae really bad and now the water is percfect but there is all this gross stuff at the bottom that wont vaccum out I dont know how to vaccum to waste or the stop if from going thru my filter is there somewhere I can get this info thanks

[robo]

Try a regular hand/pole vacuum rather then the robot. The robots have bags that won't filter as fine as most swimming pool filters.