What's this on the glass? Start of diatoms?

Discussion in 'Algae' started by Ajm200, 11 Mar 2010.

  1. Ajm200

    Ajm200 Member

    Messages:
    395
    Location:
    London
    Hi

    Can I have you expert opinion on what this might be.

    P1010163.jpg

    It looks someone has drawn a little cluster of circles on the glass with pencil. The photo doesn't show it particularly clearly. Scrapes off easily. First thought was diatoms as this tank is new but ammonia has consistently read 0 since setup. The little lines are air bubbles from the filter. I was checking flow round the tank and forgot to turn them
    off for the photo

    Tank 90l
    lighting. 24w t8. 6hrs/day
    co2 1ml easycarbo per day
    ferts. 1ml tpn+ per day
    2 mature internal filters taken from another tank 1200l per hr combined

    tank has been setup a week.
    Ammonia and nitrite constantly 0 nitrate highest 30ppm
    2 x 30% water changes so far as I have young rams in the tank.
     
  2. Steve Smith

    Steve Smith Member

    Messages:
    4,428
    Location:
    Leamington Spa, UK.
    They sort of look like eggs to me? Any snails in the tank?
     
  3. Ajm200

    Ajm200 Member

    Messages:
    395
    Location:
    London
    Only apple and nerite snails at the moment and they wouldn't lay eggs like those. The remaining assassins are all in the 48l so I'd ruled out snails.

    I only posted this as I was stumped. I wasn't sure about diatoms as I'd always thought they looked more like a scattering of brown sand on everything.
     
  4. gzylo

    gzylo Member

    Messages:
    108
    Hi

    It looks to me like fish eggs (looks exactly like corydora eggs)

    Thanks
    gzylo
     
  5. Steve Smith

    Steve Smith Member

    Messages:
    4,428
    Location:
    Leamington Spa, UK.
    Yeah, googling around I see what you mean! Do you have Cories Amanda?
     
  6. gratts

    gratts Member

    Messages:
    267
    Pest snails lay in a clear gelatinous 'blob', apple snails eggs are bright pink and nerites are much smaller and white, so you can rule snails out :thumbup: These are fish eggs! What fish are in the tank?
     
  7. Ajm200

    Ajm200 Member

    Messages:
    395
    Location:
    London
    Yes. There's 5 panda cories in the tank. I wonder if they could have been. I've scraped them off now but if more appear I'll leave them and see what happens :). Exciting stuff.

    My googling skills obviously need work

    Thanks
     
  8. Ajm200

    Ajm200 Member

    Messages:
    395
    Location:
    London
    Just found some pics that I could view with the iPod and I see what you mean. They do look like cory eggs. Some baby corys in the tank would be so cool!
     

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