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? asked in PetsFish · 2 weeks ago

Aquarium cloudy water after water change.?

I have a 55 gallon 10 year established aquarium  that water turns cloudy after 5 gallon water change.  This issue has been occurring for about a year.  I did switch to LED lighting about a year ago and their has been an algae problem since adding LEDs.  I have changed LEDs hours to 8  hours a day and I have added live plants which has reduced the algae.  Water is still cloudy after water changes.  I have a cascade filter and under gravel filter. Water tests are fine, no issues with water.

Any ideas why it's turning cloudy?

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2 Answers

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  • kswck2
    Lv 7
    1 week ago

    Probably just dissolved air in the water you are adding. 

  • noselessman
    Lv 7
    2 weeks ago

    1. 5 gallon water changes are not enough, you should be changing 35-50 percent of the water each time.  

    How much substrate do you have?  It seems like a lot.  I know there is a way to creat a nitrate free tank with deep gravel. especially if you have live plants. But It is likely that the substrate just trapped more and more detritus over time.  

    Consider a pre filter.

    consider larger water changes, 

    consider removing the substrate,

    consider cleaning the filter.

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