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How can algae be controlled in a fish tank?

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Your fish tank is a closed ecosystem for many living organisms and species. Not all algae are bad algae. If you see it growing on the rocks or driftwood inside the tank, you don’t have to worry about it. That algae is beneficial to the ecosystem since it absorbs extra nutrients and releases oxygen in exchange. However, if the algae growing all over your tank glass walls, then you have a problem as it will choke your fish.

Causes and what to do to stop overgrowth

Being aware of the causes and working around them is winning half the battle. You need to remember a few things, such as the lighting and feeding quantities to control algae growth in a fish tank:

 

  • Sunlight encourages algae growth so be sure to not keep your fish tank in direct sunlight for long periods. Remember to cut off the artificial light at some point. If it is helpful, set a reminder on your phone to turn off the artificial lights during the night.
  • It is easy to overfeed fish. A helpful way to judge if your fish are served well or not is to check for uneaten food right after you feed them. Remove it immediately to avoid overgrowth of algae.
  • If the water remains unchanged for long periods, the phosphate levels and other nutrients become concentrated in a fish tank, and this leads to algae growth. Clean your tank every week, or at least remove part of the water to maintain a balance of nutrient levels in the water.
  • Quickly clean the glass walls of any noticeable algae and replace water while you are at it.
  • Introduce olive plants or algae-eating fish in the tank to restrict algae growth.

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