Taking a line from Ultra Algae X this Bio-Alganex product from Terra Nova promises to help you take care of your algae problem. The pitching point is that Bio-Alganex is made up of anti-algae biological resources based on selected algae to reduce unwanted algae. How it does this remains to be seen. Besides ridding your aquarium of unwanted algae it alsoÂ is supposed to clear your water up, but isn’t that what a protein skimmer helps at doing? What about carbon? A container of the stuff will cost you $28, as that is the price you’ll have to pay if you want to test and see if it gets rid of your unwanted algae.