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TotalNewb

Shrimp dying every day for weeks

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TotalNewb

Hello, 

Please help

I have a bay of 9 tanks with different cardina (CRS, CBS, Tangerines Tigers, Super Tigers, Pintos, Blue Bolts, King Kongs) in each, all run off a sump. It is roughly 450L. It has been set up for over 2 years. 

However, in the past few months I have been loosing at least 1 shrimp every day if not 2. 

I got a shipment in a few months ago with some shrimp that were too old to ship and they started dying off - now have only 1 of them left, I had thought they brought in disease but I quarantined them after i noticed it, fed everyone with Fennel, added loads of cinnamon bark and alder cones and did a big water change, after that there were no more death for a few weeks. 

Now they are dropping every day. 😞

Parameters:

RO water remineralised as always

Ammonia 0, Nitrite 0, Nitrate 5-10 depending on water change (20 L every week, 40L every few weeks if Nitrate is creeping up). Have Purigen in the sump also to try help keeping it down. 

KH 0 - tried adding Montmorillite clay to raise it - it did nothing, added some crushed coral to the sump the other day, hoping it will help

GH 6

TDS was at 130 - have slowly been raising it to 170 in the hope of reducing the number of deaths

Temp 24 degrees Celsius#

EDIT: PH 5.8

I used to have the UV filter on but after they all started dying I turned it off to allow more algae to grow. 

 

Any suggestions please? Thanks, your help is very much appriciated

 

EDIT: - It mainly seems to happen to the females after they molt - there has been no breeding for the past 2 months. Lots of plants and hiding spaces there. 

Edited by TotalNewb

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jayc

What's your pH?

in an old mature tank, you can get pH crash with low KH.

 

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TotalNewb

Hi jayc, sorry - its 5.8 - have Shrimp King substrate in all the tanks

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beanbag

check for signs of bacterial infection.

Turn UV sterilizer back on.

No reason to try to change water parameters.

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TotalNewb

@beanbag I will do - thank you! Fingers crossed

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  • Posts

    • kms
      The tanks are only 16L, for it to reach 31c, it isn't hard.
    • jayc
      Sorry to hear that.  Wow, the temperature must have been very hot for the water to get to 31degC.  
    • kms
      It's room temperature, during the past week Hong Kong has become an oven. I will get another water cooler before I start again. The 3 shrimps seems to be doing well for the past 11 hrs.
    • sdlTBfanUK
      Well, what can I say, de ja vu, was it a heater malfunction or just ambient room temperature? I wouldn't hold out too much hope for the 3 survivors either if my experience was anything to go by - but I will keep my fingers crossed they survive! Really sorry to hear the news and if anyone can feel your pain that would be me. Hopefully you can just remove the cooked shrimps and start again without having to go through the whole process of re-setting up the tank and cycling from scratch like I am? Hope everything is going well with the old tank. The shops sound similar to ours in old towns, they started as houses and then get divided to shops street level and basement and the upper floors are either offices or residential. Simon  
    • kms
      update, some upsetting new, all shrimps except 3 has died in the new tank, as the water in the tank went upto 31 celcius, the other 3 was half dying, I put them into the old tank, and seem to be ok for now.
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