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Discussion Starter · #1 ·
Hello I have CRS shrimp tank and everyday 1 - 2 shrimp is dying I don't know why, my tds was high a bit but I'm getting lower tds slowy by change %15 every week now ( before add in tank put in water gh+ and make tds 140ppm) when I saw dead shrimp I think it's peace of shell on it, my tds is 260 ppm now, I will make it lower slowly. I did cycle my tank 2 week before add shrimps, I know it's very little, I didn't know. (sorry for my english btw)

my paremeters now:

tds: 260

temp: 24 degree

I don't know other paremeters but I'm going to buy ph meter, what else can I do? I'm trying everyting, I don't want to my shrimps die anymore, I have left 7 shrimps.

here is my shrimp photo after die:
Plant Food Fruit Purple Natural foods
Plant Fruit Ingredient Natural foods Vegetable
 

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There could be a few things I can see here. 1 tank isn't mature enough 2 temp is a bit warmer than I usually keep and. Breed mine on 3. Tds is a bit high but stability is key and depends where you got your shrimp from and what parameters they kept them in
Keep at it and I know you'll be successful

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Discussion Starter · #5 ·
Someone recomment me a spring water here that with right parameters, he said breeding with this water like years and and I did waterchange 2 days ago with this water with gh+, my tds is 180 now, better than before I think? 2 shrimps died after waterchange, but now shrimps looks good, I have left 3 shrimps but there is no death today hopefully, I'm really happy not dead any shrimp, I think I'm gonna be successful, I'm going to buy gh test this week, shrimps looks good and moving. when I'm after if make sure there is no death anymore and tank is stabil, and then I will buy new colony. I will use this water untill can use pure RO water.
 

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Hi @lebowskia :)

Shrimp, especially CRS, need stability above all else. Reducing the TDS from 260 to 180 in a single water change is a massive swing and probably too much for them, hence deaths after w/c. Not only the TDS swing, but possibly a corresponding pH swing too. Personally I'm trying to work to a "maximum 10%" rule whereby I don't change more than 10% of the water in one go, or change any of the water parameters by more than 10% in one go. My goal as my tank stabilises and I get better at this shrimp-keeping game is to move to a "maximum 5%" rule on my CRS tank. Just something to maybe consider.

Stability of the water parameters is the key, even if this means that they are not all perfect. Shrimp can adapt to less than ideal conditions (obviously some types are more adaptable than others), but not if water parameters keep swinging back and forth.

Before you do anything else, get yourself at least pH, GH, KH and ammonia test kits (preferably nitrite and nitrate too) and monitor your tank water for a week or two to understand the values and if there are any fluctuations.

Good luck, have fun =)
 
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