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Results 1 to 7 of 7

Thread: Toxic Algae

  1. Default Toxic Algae


    0 Not allowed!
    I have an established, very stable planted tank (120 gal). PH is controlled automatically @ 6.9, very low Nitrate, essentially o ppm Nitirite, Ammonia, Copper etc. Very high water quality. I have repeatedly attempted to add Amano and Cherry shrimp for alagae control with 100% death rate within 24 hrs. Here is what happens: 1) I carefully drip in shrimp for 2 hrs or so, 2) Add them gently to tank 3) Shrimp are active and immediately begin feeding on algae. 4) After several hours, shrimp stop moving and quickly die. I have exaustively eliminated any water quality issues. It appears that something they are feeding on is toxic. I do not appear to have any blue green algae (cyanobacteria). Shrimp are appear to be feeding on normal green algae on plants and glass walls. I'm totally baffled and a bit frustrated as I would really like to have some Amanos to help with algae. Any thoughts?

  2. Default


    0 Not allowed!
    the first thing that comes to mind is that copper may have been used in the tank previously
    Water changes are key to healthy fish!

  3. Default


    0 Not allowed!
    and you mention that you have algae problems. Are you/have you dose anything that may contain copper? Fertilizers?
    Water changes are key to healthy fish!

  4. #4

    Default


    0 Not allowed!
    Quote Originally Posted by BryanC
    PH is controlled automatically @ 6.9, very low Nitrate, essentially o ppm Nitirite, Ammonia, Copper etc.
    I don't know if this would matter or not, but what are you controlling your pH with? Or am I reading this wrong?
    46 gal fw tank with black skirt tetras, neon tetras, spotted corys, cherry barbs, otoclinus, snails & 4 amano shrimp - plastic & live plants
    5 gal QT
    Remember: Our job is to take care of the water our fish live in

  5. #5

  6. Default


    0 Not allowed!
    PH controller implies CO2 injection to me. In my experience, thats almost instant death to shrimp.

  7. #7

    Default


    0 Not allowed!
    In addition to the questions and comments already made, I would also suggest larger water changes to help lower your nutrients in the water

    If you are having a bad algae problem then you can not trust your nitrate test results to be accurate. Algae will consume nitrates and phosphates almost instantly, too fast for you to get a true sample for testing.
    If you take your time to do the research FIRST, you can successfully set-up and keep ANY type of aquarium with ease.
    "Not using a quarantine tank is like playing Russian roulette. Nobody wins the game, some people just get to play longer than others." - Anthony Calfo
    Fishless Cycle Cycling with Fish Marine Aquarium Info [URL="http://saltwater.aquaticcommunity.com/"]

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