If you are raising saltwater fish, a refugium stocked with macro algae will naturally eliminate harmful nitrates in your aquarium. Marine plants are definitely an excellent means of filtering your system. Macroalgae also helps with keeping nuisance algae at bay. The types of macro algae we carry can be used as ornamentals, help with reducing nitrates (NO3) and phosphates (PO4) and can also provide an inexpensive source of food for fish, such as Tang
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