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Thread: Cloudy water : bacterial bloom?

  1. #1
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    Cloudy water : bacterial bloom?

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    In my 2 ft tank housing my red ear sliders, one soon hock, one common sucker and japanese fish, I noticed water starts getting cloudy after a few days after I did a water change. There are also tiny white worms (planaria?)

    So I did a 60% water change yesterday. This morning, the water was very clear. So I put some feeders from my other tank to feed the soon hock. about 6 hours later, I noticed the water turned quite cloudy/murky. No ammonia or sulphur smell. Maybe woody/damp smell.

    Is it bacterial bloom? How to deal with this if it's bacterial bloom? change water again?

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    Re: Cloudy water : bacterial bloom?

    That sounds like a very high bioload for a 2ft tank. What are the sizes of the fishes/terrapins?

    Is this a new tank? How old is it? How are you filtering that tank? Any plants? Any substrate? Details details details... else no one can answer.
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    Re: Cloudy water : bacterial bloom?

    The fishes are small. soon hock about 10cm length, sucker about 8 to 10 cm, jap fish about 5 to 8 cm lenght. 2 RES about 8 to 10 cm in diameter. used to have 2 bunch of java ferns but got trampled so i throw them away. Now besides some rocks and driftwood, nothing else.

    Using an Atman internal filter with flow rate of about 600l/hr.

    Bioload is manageble I believe. What I am surprised is how the water can turn cloudy in just 5 hours. Could it be triggered by the feeders from the other tank? But the tank where I transfer the feeder is fine.

    What is the cause of the sudden cloudiness? Temperature? Although it's situated beside the window, it's not getting any direct exposure to sunlight.

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    Re: Cloudy water : bacterial bloom?

    You left out age of the tank. Also when was the last time you washed the filter and how did you wash it?

    The tank sounds over-crowded to me. The feeders have nothing to do with it. Most likely a bacteria bloom. Is your filter new? Or recently washed? Or recently change the media? Do you use anti-cholorine. Have you checked the pH of your tap water and tank water?
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    Re: Cloudy water : bacterial bloom?

    I just washed the filter when i changed the water yesterday using the water from the tank. the tank more than 6 months old. I did use anti chlorine. Last time I dont even use anti chlorine and nothing of this sort happen. I did not check ph etc. I also used to wash the filter under tap but also did not cause any bacterial bloom in the past.

    So I am not sure what triggered the bloom. At about 11am this morning, the water was crystal clear. I throw some feeder in and at 4pm it was cloudy. Does a bacterial bloom happens so fast? It kind of like just boomzz!

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    Re: Cloudy water : bacterial bloom?

    I understand how if the bacteria in the filter is killed it would cause an inbalance. So I tried to use and "old" internal filter from another tank inside this tank. The water seems to cleared a little.

    Also, the surface near the outlet of the filter seems to be foamy.

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    Re: Cloudy water : bacterial bloom?

    Been doing 30%water change for the past few days....everything seems to be back to normal.

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    Re: Cloudy water : bacterial bloom?

    Your 2 RES are usually the main culprits. They poop alot, and mess up their water real fast. Soon Hock, the sucker fish and the Japanese fish, which I think is just a Tilapia, are also big waste producers. I would get another filter if I was you, and change water often just like what you have been doing lately.
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    Re: Cloudy water : bacterial bloom?

    One of the reason which I found out could also be the misplacement of the sponge in the internal filter. I noticed the other day that I did not push the sponge fully into the internal filter so water just pass through the filter without being filtered at all, which explains the "bloom"?

    Those inhabitants are in a 2ft by 1.5ft by1.5ft tank. Doing 20% water change more regularly now to clear the waste, about once every 2 to 3 days.

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    Re: Cloudy water : bacterial bloom?

    minute, take a glass of water put a lit cover over the glass. Put some of your fish food inside, use your camera phone every 1 day take one photo of the cup. Compare the picts after 3 days. Do revert your test results after 3 days.

    2ft tank maint. period is usually 3-4 days with internal filter.

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    Re: Cloudy water : bacterial bloom?

    Quote Originally Posted by minute_me View Post
    Those inhabitants are in a 2ft by 1.5ft by1.5ft tank. Doing 20% water change more regularly now to clear the waste, about once every 2 to 3 days.
    That's a very small tank for 2 RES and those other big sized fish. What is the filter you are using?
    Fish.. Simply Irresistable
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    Re: Cloudy water : bacterial bloom?

    2 feet tank with 2 terrapins.
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    Re: Cloudy water : bacterial bloom?

    Quote Originally Posted by stormhawk View Post
    That's a very small tank for 2 RES and those other big sized fish. What is the filter you are using?
    2 ft tank still manageable at the moment. will be transffering them to a 3 footer or outdoor fibreglass pond when they get bigger.

    filter is atman internal filter 600l/hr.

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    Re: Cloudy water : bacterial bloom?

    Hi minute,

    1. You mentioned 6 months old tank. Any change of soil, filter recently, last 1-3 weeks? Type of soil.
    2. Any new plants introduced recently?

    3. Data so far:
    2ft 24" x 18" x 18"
    Atman Internal Filter 600L/hr
    Rocks, driftwoods
    Fish: Red ear sliders, 1x soon hock, 1x sucker and 1x japanese fish
    Symptoms: Woody smell, white worms.

    Soon Hock can grow to long ruler size. If you are not used to describing the tank, would you be able to take a photo and post it here?

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    Re: Cloudy water : bacterial bloom?

    I suggest you remove the 2 terrapins and observe again.

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