This site is supported by the advertisements on it, please disable your AdBlocker so we can continue to provide you with the quality content you expect.
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. We are after as many aquarium plant images that we can get, doing so will assist us in completing the aquarium plant database.

    https://barrreport.com/threads/aquatic-plant-images-wanted.14374/
    Dismiss Notice

Microsorum w/ black blotches

Discussion in 'Advanced Strategies and Fertilization' started by dhopey, Mar 11, 2011.

  1. dhopey

    dhopey Junior Poster

    Joined:
    Feb 8, 2011
    Messages:
    2
    Likes Received:
    0
    Local Time:
    5:20 AM
    [​IMG]
    [​IMG]

    https://picasaweb.google.com/dave.hopey/Microsorum#5582966593585181650
    https://picasaweb.google.com/dave.hopey/Microsorum#5582972980477156098

    Above iare photo links to my M. pteropus 'windelev' fern w/ black necrotic spots and an in tank shot from my 29 gallon. The problem is getting particularly bad and all Microsorum varietys are affected... all other plants show no signs of nutreint deficency/slow growth, including the moss/liverworts pulling ferts and CO2 exclusively from the water column exclusively like the ferns do.

    here are my specs...
    CO2 50-37ppm (pH7.0-7.2& 20dKH) in addition to CO2 mist from the canister filter output
    CO2 is stable and consistent from a pressurized systems, w/ glass ceramic diffuser fed to canister inlet
    plenty of water flow for a 29 gallon (1 canister filter and 1 powerhead
    1x65watt CFL biax lamp or 2.2wpg
    1/8tsp kno3 daily or 3.3ppm NO3 daily
    1/32kh2po4 daily or 1ppm PO4 daily
    .1ppm CSM+B daily
    .1ppm Fe DTPA daily
    5mls excel daily

    Ive kept these parmeters pretty consistent for months and the problem persists I believe the ferts and CO2 have always been were they need to be. Plants grow fast and healthy in this tank, except the ferns. I thought these black spots were a CO2 issue, but my good, consist CO2 contridicts this idea. Could it be an excel sensistivity? Too much light even though my co2 should allow it? Anyone else get the necrotic spots on their ferns?
     
    #1 dhopey, Mar 11, 2011
    Last edited by a moderator: Mar 11, 2011
  2. Crispino Ramos

    Crispino Ramos Guru Class Expert

    Joined:
    Apr 23, 2010
    Messages:
    278
    Likes Received:
    4
    Local Time:
    5:20 AM
    Trim the leaves with black spots, it could be a virus or fungus infection. It used to occur on my Java fern but it didn't continue on the new leaves after I trimmed the leaves with black spots.
     
  3. dhopey

    dhopey Junior Poster

    Joined:
    Feb 8, 2011
    Messages:
    2
    Likes Received:
    0
    Local Time:
    5:20 AM
    Well I have tried trimming them back to bare rhizomes before, the new growth looked good, but after a few weeks the necrotic spots came back. I fully plan on getting rid of the affected leaves but would prefer to wait until the new growth is healthy and Im confident I can keep it that way.

    I also noticed today in addition to the black blotches, there are also some pinholes developing as well.
     
  4. Crispino Ramos

    Crispino Ramos Guru Class Expert

    Joined:
    Apr 23, 2010
    Messages:
    278
    Likes Received:
    4
    Local Time:
    5:20 AM
    Try Hygrophila salicifolia - it's just as effective as java fern for aquascaping.
     
  5. GillesF

    GillesF Subscriber

    Joined:
    Nov 1, 2010
    Messages:
    404
    Likes Received:
    0
    Local Time:
    5:20 AM
    I think this is a CO2 defficiency, how do you measure your CO2 level? With the Ph-KH table?
     
Loading...

Share This Page