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JoM

Advice for attempting to raise brackish fry?

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JoM

Or I guess larvae really. 

Hey shrimpers, I have a nano tank that has NQ Algae Shrimp and Darwin Red Nose Shrimp. A few months ago, I noticed three fry. I wasn't doing anything unusual or special in that tank, I just got lucky I think. The three fry survived and are still shrimping around now, they ended up being DRN shrimp. Since then I've seen hundreds and hundreds of larvae, but none have survived beyond that stage since the original three. I recently got Endlers and I move the fry to this tank so I can forget about any kind of shrimp breeding within the tank for the time being. But I'm thinking of getting an external breeding box to move my berried shrimp into once I see eyes in their eggs. Once she drops them I can put her back in the main tank and try to go from there. So, how do I got about this? Obviously I need some marine salt, a hydrometer and a green water culture for food, as well as another grow out tank because I'm not going to leave the larvae in the breeding box.

Have any of you tried this? I can't find a lot of info about salinity levels, how to acclimate them back to fresh water etc. So any advice would be much appreciated. Thanks.

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jayc

Brackish water salinity levels has a huge variation. So no need to be too accurate.

 

An alternative to green water culture is powdered spirulina or chlorella. 

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  • Posts

    • sdlTBfanUK
      Thanks for that, I think I will try that just so that I know, though I don't think they will be going back into the tank now. Will be good to know though whether they were the reason. Simon edit 1hr later - I have done this, and also put some of the water in a cup to test the water itself, will leave both a week and report back. Ph was 5.5 when set up
    • beanbag
      My guess is a fungus, so remove it as much as possible and do water change (slowly). The common causes of fungus are overfeeding (left over food), something that is decaying (plants or animals), or something emitting sugars, like driftwood.
    • beanbag
      acid test them or leave it in a glass of remineralized water and check its pH again after a few days.
    • sdlTBfanUK
      All the other parameters are stable and perfect, and the newly filtered remineralised water that goes into the tank when doing a water change is Ph5.5. I use the dennerle mineral double in place of salty shrimp as it is easier to use being a liquid! I do 10% water changes each week. It is a bit baffling to me but as there is no obvious problems at this point I am not too worried but will probably get some new substrate ready, just in case. The substrate that is in the tank is a year old and as mentioned the only other unknown that may have caused the problem was I had 3 geodes in the tank, which are a type of rock? Simon
    • sdlTBfanUK
      I leave the sides and back alone as well and the shrimplets seem to come out onto that a lot and IF there are new borns that is the only place where I get to see them. When you do a water change you need to add in the new water very slowly also, most use some sort of dripper setup. It may just be that the setup wasn't established enough, that is what I put my fungus down too anyway. Mine wasn't really anywhere that I could remove it but it cleared in less than a week, but if you can remove some manually I would do that.I imagine just adding the shrimp may cause a small/temporary imbalance as it then has to adjust again, if that makes sense?  Hopefully you won't loose any more shrimps, and I wouldn't worry too much about the fungus unless it just keeps getting worse, as I have had this happen a few times with newish tanks and it has always just cleared up in about a week. Simon
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