subject: Pros and Cons of Algaecides [print this page] After all, how could exotic goldfish or aquatic plants not improve visual allure? Of course, plants and fish have to be visible in order to provide that benefit. When they are obscured or, worse, harmed by algae these benefits decrease. That is why removing algae are important. The most popular way to remove algae is through the use of algaecides. While this is a good method, it is not a perfect one. So, let's look at a few of the pros and cons of using algaecides.
Some algaecides such as copper sulfate can cause harm to certain fish like koi that may live the pond. This is why it is necessary to select an algaecide that has a good reputation in the consumer marketplace. Also, if the algaecide comes in granular form it needs to dissolve as soon as it comes in contact with the water. If not, it could possible be ingested by birds or pets. This could poison the animal.
Using too much algaecide or using it in a new pond prior to proper development of an adequate ecosystem can have devastating effects. One of these effects could be an inordinate increase of ammonia in the pond while simultaneously decreasing helpful bacteria in the pond. Needless to say, this can harm plant and aquatic life.
Some algaecides can be mildly corrosive. That is why they should not be mixed with ammonia, household cleaners, or other products that would increase the potential for corrosiveness to the pond. Also, there is the potential that liquid algaecides can burn flesh if not handled properly. That is why extreme care must be taken when handling algaecides.
