Algae thrive when there are plenty of nutrients in the aquarium water. However, when nutrients are in short supply algae growth slows down. Nitrate and phosphate are the two nutrients that we can easily limit in saltwater aquariums. Nutrients enter the aquarium in tap water and through fish and invertebrate foods. If your tap water contains nitrate or phosphate, every water change or top-off feeds the algae! A (RO) filter system will remove phosphates, nitrates and other unnecessary nutrients from the water supply and keep them out of your aquarium. Fish and invertebrate food contains the essential vitamins, minerals and amino acids necessary to sustain corals, fish, and other marine life. It is also a source of nutrients that stimulate algae growth. Feed small amounts of food so none gets sucked into the filter or trapped behind the rocks. Many aquarists have found that fish don’t need a lot of food to remain healthy and colorful. The same goes for corals. Any food that is not needed simply adds nutrients to the water. Try feeding less food and watch the algae disappear!
Cultivating Macroalgae in Your Saltwater Aquarium - The Spruce
Algae growth in your saltwater aquarium is natural. They can either be good or bad depending on whether or not they become unmanageable and get out of control.
algae Archives - Saltwater Aquarium Blog
If the pH levels of the water isn’t kept in check then green algae can get comfortable in the environment and begin to grow and spread. The ideal pH level for water in saltwater aquariums is 7.6 to 8.4. Anything above the prescribed limit can lead to an imbalance in the ecosystem.
Control Algae Growth in Freshwater and Saltwater Aquariums
Referred to as Green Hair or Net Algae, learn about unwanted nuisance Bryopsis, Derbesia, and Cladophora species identification, why outbreaks occur, what makes these macroalgae grow, and how to control or get rid of them in saltwater aquarium systems.This video shows how to get rid of hair algae in a saltwater aquarium. Make sure to start with 0 tds water before mixing your salt. Keep feeding under control. Maintain 0 nitrates and phosphates, Kh of 7-11, Calcium of 400-450ppm, & Magnesium of 1300-1500ppm. Remove as much algae as possible, perform 10% water changes. No light bulbs should be older than a year and you should keep high water flow in your aquarium.