Aquariums make a wonderful hobby. They are soothing, interesting and can provide a lot of fun and entertainment. However, in order to make the most of your aquarium, taking proper care of it is exceptionally important. It must be maintained, and part of proper maintenance is understanding issues that can develop. One of the side effects of improper aquarium maintenance is the development of pests, and Hydra oligactis – more commonly referred to as just hydra is one of the most dangerous. Al