Dmh

My pool filter looks exactly the same as DWest filter. I have a mustard algae problem that's almost under control. I used Clorox Xtra blue algaecide, which is a liquid. I'm assuming that's what clogged my filter? But why did it do this? It's a very thick heavy slime completely coating the filter. I only put the algaecide in once but 2 times now my filter has clogged up like this. Water balance is perfect.