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Thread: pacu tank issues

  1. #9
    StifflerMichael's Avatar
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    My guess is that you have way too much nutrients in that tank, and the algae simply have capitalized on this.

    You've mentioned that you do a 20% water change weekly. I would definitely ramp that up, to more like 3-50% water changes weekly...but more importantly:

    1. You never mentioned what type of filtration you have on that tank. What kind do you have? Please describe the exact filter (like Penguin 170 Bio-Wheel for example).

    2. Did you at all cycle this tank before adding the pacu?

    3. What kind of lighting does the tank receive? Does it get any sunlight?

    4. If you could tell me any readings like ammonia, nitrite and nitrate, that would be incredibly helpful.

    I'm not an expert, but I have a bit of experience with planted tanks, and because of that I have a bit of experience with algae (they go hand in hand sometimes). These hopefully should be relatively simple questions to answer.

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    1. it's a penguin 200b good for up to 50 gal tanks, plus i have a large powerhead to circulate
    2.yes i did, i had a pleco and some ghost shrimp in it for a little over 2 months
    3.it's a florescent bulb and yeah it's across the room from a window in my dining room so it gets a little sunlight
    4.ammonia is normal, nitrates are normal, and nitrites are a little high but thats b/c i just did my water change and he just ate some peas

  3. #11
    StifflerMichael's Avatar
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    What do you mean by "normal readings"? Where any of these readings above 0? The best time to measure would be before you do any feedings.

    So far, I would recommend keeping the curtian closed in the kitchen to keep the sunlight out. And the fluorescent light, perhaps you could just leave it off until the problem goes away. Green water needs light to live.

  4. #12
    Stay chooned in for more! Clint's Avatar
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    I think he means they are zero.

    You'r nitrates are a little high because you just did a water change? what? do you have nitrates in your source of water?

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    i said nitrites and yes b/c i have to use tap water with neutralizer. i am working on getting a ro filter now. nitrates are at 20 which is safe, nitrites are 0, hardness is 75 or soft, alkalinity is 80 or moderate, ph is neutral between 6.8 and 7.2
    and once again i'm a SHE NOT A HE!

  6. #14
    Stay chooned in for more! Clint's Avatar
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    Lol, sorry.

  7. #15
    StifflerMichael's Avatar
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    My water is bad also, it has chloramine in it...you have to add the water conditioner which will break the chloramine bond and neutralize chlorine...then you end up with ammonia, which many products will also neutralize. I've never had problems with nitrite in my tap water though, but I know some products allow you to treat for this. You really don't need a RO filter IMO...I bought one for my fish and now I just end up using it for my CPs only!

    So, it seems that your tank is cycled. I totally hate stressing my fish, or any fish, by cycling the tank with fish though. You should try cycling with cocktail shrimp, it works really well.

    Your nitrates levels, though safe for the fish, are high enough to provide a nutrient source for the algae.

    One other thing I remembered, I've read that you can use a diatom filter...this website talks about that and other ways to remove green algae (sorry I didn't mention it earlier): Steve Hampton's website: green algae issues This guy definitely has much more experience with this problem, I would consider giving his "5-day method" a shot.

    I hope I've helped.

  8. #16

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    thanks for your help. i want a ro filter for both my plants and fish. i found one at a local pet store for about $100 so considering it's a decent price i might go ahead and buy it. where do you get cocktail shrimp? my pacu might decide to have them for dinner though

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