There are many problems that algae can cause. First, no one wants to go swimming anymore. Secondly, is that it requires an extreme amount of work, effort and money to completely get rid of algae from the pool water. An algae is a health hazard and may contain or even attract other pathogens like the E-coli bacteria.
 
The algae can clog up sanitation pathways in the water; it also can clog up the pores in a pool filter, decreasing filtration and requires more backwashing or replacement of your pool filter system. Algae are kind of like weeds in your garden. Unsightly, unwanted space takers that create more work for the gardener, and sap up nutrients and resources from the flora we wish to grow. So make sure you’re keeping up with the maintenance of your swimming pool.