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Thread: Diatom Algae

  1. #1

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    Default Diatom Algae


    0 Not allowed!
    Hi all.
    I have what they call diatom algae. Black moldy growths on the glass.
    Any idea what this is from and how to control it?

    Fish are all healthy and just had fry. Everything is perfect water wise.
    30 gallon salt water tank
    Protein skimmer
    2 power heads
    2 clowns and 3 hermits

    Joe C.

  2. #2

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    Default


    0 Not allowed!
    Can you flesh out the rest of your setup? Planted or not? Water change schedule?
    8 tanks running now:
    1x 220 gallon, 2x55 gallon, 1x40 gallon long, 1x29 gallon, 1x20 gallon long, 1x5.5 gallon, 1x2 gallon
    Gouramis, barbs, rasboras, plecos, corys, tetras, fancy guppies, swordtails, ottos, rainbow shark, upside-down catfish, snails, and Max and Sparkles the bettas.

  3. #3

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    Default


    0 Not allowed!
    I agree with gm about knowing if there are plants or not because it can mean two different things.

    But I also started with the black algae and got a phosphate absorber which lowered the phosphates from 2 to .50 in my tank. However, if you have plants in your tank, you want higher phosphates so knowing which you have would help with your answers.

  4. #4

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    Default


    0 Not allowed!
    Hi,
    I do not have plants, and I do not do water changes any longer.

    I replace evaporated water, that's it. About 10 gallons a week.

    As soon as I stopped the water changes my fish had fry.

    All my water perameters are perfect, always.
    30 gallon salt water tank
    Protein skimmer
    2 power heads
    2 clowns and 3 hermits

    Joe C.

  5. #5

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    Default


    0 Not allowed!
    Without plants and without water changes? Impossible to have perfect water conditions. Without something to absorb the nitrAtes, that is.
    8 tanks running now:
    1x 220 gallon, 2x55 gallon, 1x40 gallon long, 1x29 gallon, 1x20 gallon long, 1x5.5 gallon, 1x2 gallon
    Gouramis, barbs, rasboras, plecos, corys, tetras, fancy guppies, swordtails, ottos, rainbow shark, upside-down catfish, snails, and Max and Sparkles the bettas.

  6. #6

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    Default


    0 Not allowed!
    brown algae is a sign of too little light too

  7. #7

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    Default


    0 Not allowed!
    Most often, diatoms appear in fresh aquariums with an unstable nitrogen cycle, but the reason can be in something else.
    If you want to get rid of them one of the most effective ways to get rid of diatoms is to enhance lighting. Diatoms do not like bright light, so adding additional lamps can effectively deal with them. The aquarium light should be 1.1-1.85 W/gal, but as with reasons here are different ways. You can easily find them on the net. For example, this research shows some other ways how to get rid of them.

  8. #8

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    Default


    1 Not allowed!
    Old thread, OP hasn't replied in 13+ years, now closed.
    10 Gallon Beginner Tank... Journal
    40 Gallon Breeder: ... Journal
    29 Gallon: ... Journal

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