I took coffee and a stone book , and a list of rocks to do a bit of research , and enjoyed myself . The pond pump started slowing down , and I watched it slow in the few hours I was out reading , so I cleaned it . The algae are floating around the pond thickly , and it had clogged the pump again .
According to the above context, answer the following question.
Why might I be pumping the water from the pond ?


I might be trying to remove the excess algae .