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Thread: Oily / dusty water surface

  1. #1
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    Oily / dusty water surface

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    Hi all,
    Can anyone tell me how come my tank always become Oily / dusty water surface? i clean it & it keep coming back. i wonder what is happening.

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    Do a search and you will find the answer. This is one of the more recent thread on this topic.

    The cheapest and simplest solution is to introduce some platies or mollies.

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    yup... getting one is enough..

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    Or just add a surface skimmer to your external filter.. It's about S$9 to S$15.

    Cheers,
    I have dwarf cichlids in my tanks! Do you?

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    It's harmless by the way, so don't really have to bother about it...
    Click here to help me make my Fish Room Project a reality!

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    Or you can aerate your tank with air pump with the help of a timer when you off the lights and plants are respirating...

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    Quote Originally Posted by sheng
    Hi all,
    Can anyone tell me how come my tank always become Oily / dusty water surface? i clean it & it keep coming back. i wonder what is happening.

    Anyone try removing it with news paper? I find it quite fast and easy, just spread the newspaper on top and pull up the paper and the oil comes up too ...

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    i dun really think its harmless... i lost one whole batch of albino red guppies b4 due to this surface oil... i thought harmless then dun care, then next few days die one by one... then i add a skimmer then no prob liao... my aunt tank also had this surface oil then i again thought no prob... cycle her tank then bought 3 sae n put inside then next day put in 50 cardinals... next day all sae die n 7 cardinal die... once i help her add a skimmer then no prob already...

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    Quote Originally Posted by benny
    Or just add a surface skimmer to your external filter.. It's about S$9 to S$15.

    Cheers,
    I use one of these in my aquarium and its amazing. the water's surface has never been more clear. its a great investment. i spent $15 USD and one of the best things i've ever bought for my aquarium.

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    I hope you guys realise there's a difference between protein and oil films

    Oil films kill fish. they appear when you use cheap filter brands with poor quality control. The oil is usually excess lubricant. Oil films are "rainbow" coloured when seen from an angle.

    Protein films on the other hand are the by product of all the little biological processes going on in the tank. This is harmless, and once you've got sufficient surface fish the problem will be non-existant. Protein films are cloudy white and will break up into solid looking patches when disturbed.

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    Quote Originally Posted by XnSdVd
    I hope you guys realise there's a difference between protein and oil films

    Oil films kill fish. they appear when you use cheap filter brands with poor quality control. The oil is usually excess lubricant. Oil films are "rainbow" coloured when seen from an angle.

    Protein films on the other hand are the by product of all the little biological processes going on in the tank. This is harmless, and once you've got sufficient surface fish the problem will be non-existant. Protein films are cloudy white and will break up into solid looking patches when disturbed.
    ic... but in my aunt's tank, the surface of the water had a protein film... n there were 50 cardinals in here tank n 7 died, until i bought her a surface skimmer to clear the protein film... so is it still harmless?

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    50 cardinals put in at one shot is not a smart thing to do.. could be due to anything BESIDES the protein film.

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    My guess is that your 50 cardinals caused an ammonia spike, which killed the weakest of them first. Though your adding the proteinskimmer definately saved them in the sense that it allowed for more nitrifying bacteria to grow.

    From what I understand, the ammount of nitrifying bacteria is directly related to the surface area available and the ammount of food(ammonia) available. Which seems to by why adding large ammounts of new livestock often has "unhealthy" consiquences.

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    Quote Originally Posted by ranmasatome
    50 cardinals put in at one shot is not a smart thing to do.. could be due to anything BESIDES the protein film.
    well, might be... but when the cardinals started to die, no water change was carried out... only the protein skimmer was added n everything went back to normal... n also, i added 50 cardinals to my tank at one short n my cardinals were fine...

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    Quote Originally Posted by XnSdVd
    My guess is that your 50 cardinals caused an ammonia spike, which killed the weakest of them first. Though your adding the proteinskimmer definately saved them in the sense that it allowed for more nitrifying bacteria to grow.

    From what I understand, the ammount of nitrifying bacteria is directly related to the surface area available and the ammount of food(ammonia) available. Which seems to by why adding large ammounts of new livestock often has "unhealthy" consiquences.
    yeah, ammonia spike might be a cause...

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