Does Algae Grow in Saltwater Aquariums?

Even though marine algae can be very beneficial in the saltwater aquarium, you do not want it to get out of control. ... Algae tends to grow quickly in tanks with high levels of nitrate and phosphate, so controlling these chemicals is key to controlling unwanted algae growth.

How do I keep algae from growing in my saltwater tank?

5 Effective Ways to Control Algae in Reef Aquariums
  1. Always use RO/DI water in a reef aquarium.
  2. Do not overfeed fish and corals.
  3. Remove nutrients from the aquarium.
  4. Maintain or upgrade aquarium lighting.
  5. Keep your aquarium clean.

Why is my saltwater tank growing algae?

Algae growth is fueled by nutrients in the water–the nutrients are essentially fertilizer. When you fight algae with algae, the algae you want to keep (but don't have to look at) take the nutrients away from the problem algae and tip the scales in your favor.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.