Urgent help needed pods disappearing, dragonets getting really thin

Discussion in 'Urgent Help Needed' started by Barlan, 11 May 2014.

  1. Barlan

    Barlan

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    Hi all

    i need some help with my pods, they're disappearing and i need to get their population going again.

    i have 2 scooter blennies and a mandarin and i had pods, but they seem to have diminished to the point where i dont even see any adults running around.

    even the live rock in the sump, which was meant to be our pod farm has no pods in it, it seems sterile.

    i dont know whats happening to them or why they arent reproducing.

    i have a small 9W uv light in the sump right next to the live rock, could this kill off some pods?

    i really need a solution here. please please please.

    i'm thinking of making an external pod farm, but i will need some pods from some generous people to start the farm. (if only we were in the states... then i could just buy them :( )

    right now i really really need to know what i can do to get my pods reproducing again.

    i cant catch my dragonets, so please dont suggest moving them. :(

    i dont see them eating lobster eggs or anything like that, but i am willing to try anything!

    please help.

    thank you everyone

    kind regards

    B
     
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  3. Kunhardt

    Kunhardt

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    What size tank do you have? How much liverock is in the tank? How long has it been running? Answering these questions will help me help you, as they will give more info to go on. :)
     
  4. shan

    shan

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    Fortified Live brine shrimp - best quick solution I can think off. Not necessarily long term, but will keep the fish alive while the pods reproduce.
     
  5. irie ivan

    irie ivan MASA Contributor

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    When u say uv, please elaborate. If a uv sterilizer, yes, the combined onslaught from the UV dragonets, mandarins and other micro fauna hunters such as crab, shrimp wrasses angels etc etc etc, will inevitably decimate populations. With a refugium in your sump, larvae are most likely being zapped, not all of them, but enough to have a noticeable effect.
    Also, reduced nutrients will affect population densities. Try feeding the tank some live phyto and zooplankto, now available in SA.
    I am doubtful if the entire population will be wiped out, switch on your lights at night and you are bound to see some scuttling around... With feeding of the aforementioned, and switching off your uv, population will hopefully recover, determined by just how low the density is at the moment.
    Where is your skimmer in relation to the rock in your sump?
     
  6. irie ivan

    irie ivan MASA Contributor

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    What size is your tank and sump & just how much LR in tank and sump?
     
  7. Barlan

    Barlan Thread Starter

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    hi guys

    thanks for the replies.

    some answers to the questions asked above.

    What size tank do you have?
    ---800L

    How much liverock is in the tank?
    ---cant recall exactly, but about 60-80kgs, i cant recall the name of it, but i got it from Jungle aquatics, so its their standard type.

    Where is your skimmer in relation to the rock in your sump? (@irie ivan)
    ---right next to the live rock, the uv sterilizer pumps water from the skimmer chamber(next to the live rock) and pushes it to the pump conencted to the skimmer. it isnt plumbed inline.

    How long has it been running?
    ---around 8 months, was fallow from jan to mid april. there were pods from the start0 (living on the live rock transferred from the old tank) as well as during the fallow period.

    clean up crew - electric blue hermits and shrimp (peppermints and cleaner) were still in there thru out as well.

    we fed them mostly pellets and some frozen foods (80% pellets).

    water params as of yesterdays tests are:
    salinity : 1025
    PH: 8.4
    nitrate: 0
    nitrite:0
    Phosphates: 0.003
    ammonia: 0

    we've also got a bag (1kg) titanium cubes from orcalabs, they have removed all nitrates (used to be a steady 2).

    in terms of Fortified Live brine shrimp (@shan), can i make them or buy them?
    if i can make them, what do i need and what are the instructions.
    if i can buy them, where abouts can i find them?
    we have managed to hatch some baby brine before.

    anymore info needed, please let me know.

    B
     
    Last edited: 11 May 2014
  8. irie ivan

    irie ivan MASA Contributor

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    Combined onslaught, uv, fish, SHRIMPS, depleted nutrients.
    By all means carry on using the cubes, they'll allow you to feed more pod encouraging phyto and zooplankton.
     
  9. Barlan

    Barlan Thread Starter

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    where can get hold of live phyto and zoo plankton in jhb or pta?

    and is the bottled phyto /zooplantkton sufficient or not?

    PS: we've turned off the uv sterilizer.
     
    Last edited: 11 May 2014
  10. irie ivan

    irie ivan MASA Contributor

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    Try reef aquatics they have an on line shop, not sure which shops up there they supply.
     
  11. Andre@ReefAquatics

    Andre@ReefAquatics Sponsor

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    Last edited by a moderator: 26 Nov 2015
  12. Barlan

    Barlan Thread Starter

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    Thanks Andre, ordered the product from you now, missed the cut off for today :( but its okay we making brine shrimp. So hopefully that will help until the stuff arrives

    Thanks for everyones help its greatyl appreciated
     
  13. Twin seen

    Twin seen

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    hi. just a quick side note. my mandarin goes for amphipods as well as copepods. cant guarantee yours will be the same but amphipods are easier to spot and you might find someone who is willing to donate a few if you cant find copepods. +1 on the UV. i turned mine off as well. i also have the biocubes (not titanium though). i culture my own rotifers (culture kit supplied by andre). the copepods and amphipods will prey on the roti's. from what i understand the phyto is food for the rotifers. i'm not sure your copepods can feed on phyto as the phyto is too small.
     
  14. Twin seen

    Twin seen

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    sorry in case you don't know, the rotifers are zooplankton
     
  15. Andre@ReefAquatics

    Andre@ReefAquatics Sponsor

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    @Barlan , thanks for the swift purchase, your Super-sized kit has been dispatched this morning and will be with you tomorrow.
    @Twin seen, glad to see you keeping your cultures going.
     
    Last edited by a moderator: 26 Nov 2015
  16. Twin seen

    Twin seen

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    thanks Andre. learned a hard lesson about cross contamination. accidently got some roti's in the phyto culture. i'm sure you know the outcome. my mistake! taking special care now and phyto is looking good so far.
     
  17. irie ivan

    irie ivan MASA Contributor

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    Copepods do feed on phyto ;)
     
  18. Barlan

    Barlan Thread Starter

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    Hi all

    thanks for all the replies :):1:

    Just an update, we received our package on thursday evening and promptly setup the cultures. (@Andre -- thank you so much!!!)

    here are some pics.

    phyto jar (in our RSM for light)
    rotifer bucket, and a pic of the rotifers in the bucket

    so far we've fed our roties a few times, depending on the colour change of the water. i'm not 100% sure here, but as far as i understand it, when the water becomes more yellow and clear (like the original stock) i feed it till its light green and a little cloudy. (the instructions are clear, i just like to confirm)

    the phyto is not dark green yet, but its only been 1 day. :) i've added 0.5 ml fertilizer to 50ml phyto culture and 1.8L salt water at 1.020 SG

    i've fed my tank 1l culture tonight, i dont want to deplete it too fast.

    is there any way of checking the density of the roti culture?

    will keep you updated on any changes.

    KR

    B

    Phyto.jpg

    Roti Bucket.jpg

    20140518_233152.jpg
     
  19. Andre@ReefAquatics

    Andre@ReefAquatics Sponsor

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    Rotifer tinge of green water looks perfect, add water every 3 days if you want to increase culture.
    Check rotifer densities shining a torch into the water column. we use a microscope but it comes with experience and you will learn to judge with your eye and torch :)

    Shout if you need help.
     
  20. Andre@ReefAquatics

    Andre@ReefAquatics Sponsor

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    perfect, rule of thumb, if you cannot see the bottom of the container means rotifers have enough food.
     
  21. Ebi Omer

    Ebi Omer

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    Hi.
    I also purchased my live plankton this weekend.

    I would like to know if the different types of pods feed on bottled plankton. Not the live one..
     
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