How to Naturally Control Fish Tank Algae

The thing about algae is that it can be everywhere within a fish tank. Algae thrives in fish tanks, and there are even various types that withstand water purification processes. You've probably seen the telltale green screen beginning to form across your tank, ruining the view of your fish. If you follow these steps, though, you can soon find yourself without algae in your tank. You can also do it completely naturally.

Things You'll Need

  • UV sterilizer
  • Salt
  • Ultrasonic device
  • Barley straw
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Instructions

    • 1

      Install a UV sterilizer into your tank. These are easily mountable on the side of the tank. Simply attach the plastic hook on the side of the sterilizer to the lip of the tank. Turn the sterilizer to tighten it against the tank, much like a clamp. Water gets pumped through here, and UV rays kill algae...as well as other fish pathogens and bacteria that can harm your pets.

    • 2

      Install an ultrasonic device if you have a larger tank. These are mountable in the same way the UV sterilizers are. A clamp on the side of the attaches them to the side of the tank. Twist to tighten so that it holds itself in place. This puts out ultrasonic waves that can cause small algae spores to vibrate and break apart.

    • 3

      Add salt to your tank if you have string algae. Use a small amount and make sure to clean out the water right after this. Move your fish to another location while this treatment goes on.

    • 4

      Put some barley straw into your tank. It will break down in the water and release humic acids that will inhibit the growth of algae.

    • 5

      Clean up any remaining algae. Change the water after you have finished with these treatments.