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Ideal water parameters for Hornwort

Discussion in 'Aquatic Plant Species' started by evangemeren, Feb 27, 2014.

  1. evangemeren

    evangemeren Junior Poster

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    Even though i have heard from many sources that Hornwort is supposed to be a very hardy plant, I seem to manage to be able to kill it within a week or two every time.

    I am trying to use it as a nutrient sponge to absorb excess nitrogenous waste, as well as provide a supplementary food source. I am trying to grow it free-floating in a refugium separate from my main display tank. My primary aquarium inhabitants are aquatic turtles which will eat it straight away if I try and keep it in the main tank with them.

    The refugium is supplied by water from the display tank via a built-in overflow ... the refugium is an Aqueon ProFlex Model 2. The return pump is a Tunze 1073.05 variable speed DC pump that passes around 450 GPH back to the display tank.

    The refugium has a dedicated Aquaray GroBeam 1500 ultimo LED tile (6500K) so I think I have more than enough light.

    I have a pressurized CO2 system (the "Ultimate CO2 System" from Green Leaf Aquariums) with a 60mm Atomic Diffuser in the main compartment of the refugium, with a Milwaukee MC122 pH Controller set to switch off the solenoid when the pH drops below 7. I also fertilize with Seachem's Flourish twice per week according to the instructions on their label.

    I prepare all my water from a Spectrapure RO/DI unit, and then re-mineralize the water using Seachem Equilibrium and buffer using a 2.5:1 ratio of Seachem's Alkaline Buffer to Acid Buffer.

    I perform a 25% water change every week.

    My water parameters are pretty much rock-steady at a pH of 7.5, GH of 3 meq/L, and KH of 3 meq/L. Water temp is 78 degrees F.

    So ... what am I doing wrong?

    I have tried purchasing Hornwort from several different suppliers, but no matter what I do it dies within a week or two.

    Thoughts?
     
  2. Asmack Arabia

    Asmack Arabia Banned

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    i suspect there is not enough macro nutrients in your water. did you test for those?. an excess of copper levels could be also. i found hornwort likes still or very gentle water.
     
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