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Java fern

Discussion in 'General Plant Topics' started by eddtango, Nov 17, 2006.

  1. eddtango

    eddtango Prolific Poster

    May 20, 2005
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    7:45 PM
    My Java fern's leaves are turning black or brown,esp on the tips. So are the Bolbitis. What condition is this? Is this due to lack of nutrients or natural cycle? Is it better to remove them?
  2. Tom Barr

    Tom Barr Founder
    Staff Member Administrator

    Jan 23, 2005
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    Local Time:
    7:45 PM
    CO2, CO2 and CO2 for both.

    Bolbitus grows superbly under a very wide range with good CO2.
    Java always goes black after it grows well for awhile, and the other plants are also growing well.

    Thus the plants increase in biomass.
    As they do that, they also demand more nutrients and..........CO2.

    So add more CO2.

    It'll take a few weeks etc for the Java to bounch back.

    I've lowered the CO2 on purpose, never had any BBA, but the fern blackened the Bolbitus rotted.

    Then returned the CO2 and the issue went away.
    I also tried lowering the light(Removed the MH and left the PC's on), again, the growth returned as there is less growth and CO2 demand with less light.

    Tom Barr

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