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Clownfish Fry 0-72 Hrs

Discussion in 'Breeding & Aquaculture' started by dmc456, Mar 24, 2018.

  1. dmc456

    dmc456 Registered

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    I have a pair of Black Ice clowns that have been breeding every 10-11 day like clock work for the last 2 months.

    I have been able to raise around 150 so far but having troubles with them dying in 12-48 hr period. Once I get past 72 hrs (3-days) I hardly every loose even one.

    I have made the mistakes of not enough rotifers and also too many rotifers in the fry tank. I get 99% hatch rate the night they hatch. Usually 200-300 fry swimming the next morning. I'm getting it down to what I estate around 15 rotifers per ml.

    My question now is on tank size, airflow, and rot density. I'm using a 5 gal tank and start around 3 gal at 1.025 sg. I lower it to 1.020 during the first 24 hrs with a drip. I have been using a rigid air line about 2-3 bubbles per second and it seem to not turn the water enough. What I see is a dense later of rotifers in the bottom 2" of the tank.

    So today, I tried a air-stone with more airflow to mix them better and help with oxygen.

    You that are breeding clownfish and getting 200-300+ thru meta per batch....what are you doing with airflow, rot density, and tank size?
     
  2. keith123

    keith123 Registered

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    You could try using a flat sided circular tank similar to those used for jellyfish but with slow air flow on one side to create a circular water motion in the tank. This will keep both rotifers and fish in constant motion and prevent either from dropping to the bottom.

    Sent from my SM-G935F using Tapatalk
     
    doug_amanda likes this.
  3. keith123

    keith123 Registered

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    Just found a couple of pics of the tanks I used to use to raise fry.
    The first was home made, air was slowly fed in (about 2 bubbles a second) on the left side of the tank and this created a clockwise current in the tank. It was sufficient to keep the fry and the rotifers in suspension. Any detritus would fall to the bottom where there is a small drain (an air line) to draw this off.
    The 2nd pic is of a commercial aquarium which I used in exactly the same way but as a second stage grow-on tank. This worked by pumping water from a sump in by a small pipe fitted to the right of the tank this time still creating a clockwise current but with an overflow at the surface. The overflow water passing back down into the sump where it was filtered and recirculated. I hope this is of help [​IMG][​IMG]

    Sent from my SM-G935F using Tapatalk
     
    doug_amanda likes this.
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