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Strange White Spots/ Stuff On Tank Walls Question

Discussion in 'More Freshwater Aquarium Topics' started by Tony_P, Apr 23, 2019.

  1. Tony_PNew MemberMember

    Over the past week I have had white stuff appear on my tank walls. Its not long streaks or small spots but irregular shaped deposits


    At first I thought it was deteriorating flaked food, but that doesn't seem to be it. I scrubbed it off but more appeared within 24 hours. Water quality seems to be fine. Fish seem healthy too (guppies, cories, and otos), so I don't see any signs of ick.

    I was wondering if it could be egg deposits from my assassin snails?

    Any ideas

  2. Momgoose56Well Known MemberMember

    The photo didn't load. Can you repost it? How long has your tank been set up? Sometimes different kinds of 'stuff' (fungi, algae) grows in tanks. My mystery snails leave slime on the walls of my tank I can see when I do water changes. I'm always wiping that stuff off!

    Assassin snail egg

    Last edited by a moderator: May 17, 2019
  3. Tony_PNew MemberMember

    Tried to do the photo via Google Photos .. perhaps this link will work


    Tank has been up and good since last August

  4. Momgoose56Well Known MemberMember

    Picture is pretty blurry in closeup so hard to say what that is. What are your nitrates reading?
  5. Tony_PNew MemberMember

    Just did a set of tests

    Nitrates are 40ppm -- but they always have been that in my setup
    Nitrites are 0ppm
    Ammonia is 0ppm
    pH is 7.0

  6. kallililly1973Well Known MemberMember

    Do they move around when you watch em? Did u try to remove with your finger? Is it mushy or hard? Calcium deposits possibly?
  7. Tony_PNew MemberMember

    The don't move. They rub off easily with my finger and don't feel gritty

  8. kallililly1973Well Known MemberMember

    Could it be sediment built up under the inside rim of your tank and coming off little by little when u do your WC’s ?
  9. Tony_PNew MemberMember

    Must have been the case as I did another cleaning with my spongy brush and it hasn't come back