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Thread: Mystery Snails

  1. #1

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    Default Mystery Snails


    0 Not allowed!
    Greetings all. I have a well established (10+ years) 55 gallon fresh water aquarium. This afternoon I notice SNAILS!! Dozens of them. From out of nowhere. Where'd they come from?? For reference, I have added NOTHING new in over a year. My plants are well established. I conduct routine water changes (10-20% every other week). Where did the snails come from??

  2. #2

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    2 Not allowed!
    Welcome to the AC.

    The snails had to have come from some outside source...do you have any other tanks?

    Can you get a pic of the snails in question?
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  3. #3

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    2 Not allowed!
    Have you changed your feeding routine, tank maintenance routine or stocking recently?
    As Slaphppy7 said, the snails must have come from an external source.

    It is likely that they simply existed at a low population density until some change in the balance of the tank caused an accumulation of detritus or food which allowed them to multiply.

    You should also check your filter and your water parameters. Changes in water parameters or dissolved oxygen levels can cause snails to crawl to the surface and become more visible.

    Alternatively, with an established tank, could it be that you just don't usually look very closely at the tank anymore such that once you happen to notice a snail, it draws your attention to other snails?

  4. #4

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    0 Not allowed!
    Quote Originally Posted by Slaphppy7 View Post
    Welcome to the AC.

    The snails had to have come from some outside source...do you have any other tanks?

    Can you get a pic of the snails in question?
    No other tanks. I haven't gotten a pic of them because they're so small. There's dozens of them.

  5. #5

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    No to the feeding routine, tank maintenance or stocking. I've had the same bunch of fish and plants in there for years.

    Possibly the "low density" angle. I don't know.

    Filter and water stuff I maintain on a regular schedule, so I draw a blank there too.

    Possibly. They were all over the place.

    I'm stumped.

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    Are they round or trumpet shaped?
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  7. #7

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    Actually just ran into the same issue, however we introduced a new plant to the tank. By my count this morning, I have at least 21 snails varying from half an inch to millimeters. Trying to figure out what to do. Probably need to get rid of the majority.

    Didn't mean to hijack. All I can say is that there has to be some source. Did you add a new fish or plant at all over the last few months? It took about 3-4 weeks until we saw the first snail. We are now a couple months with the new plant and as I said there are over 20.

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