RCS sturggling after introducing chiller

**Seefoot** · 13th Nov 2019, 10:44

Hello all,

My rcs seems to be struggling after i added a chiller from 30 degreeC to 25 degreeC during the few hours and 1 died this morning. didnt know the temperature tolerance level for rcs. my tank is a 1.2 ft tank.any guru can help?

**genki89** · 13th Nov 2019, 10:51

It is not about the tolerance. It is about the sudden drop in temperature.

Within 24hrs, if your tank are mature/stabilised, any changes should take time. If your temperature hover around 30 most of the time, you should attach the chiller and run it at 28.

Slowly reduce the temperature over a period of time. By reducing the temperature from 30 to 25 within hours, it is the same as buying a new pack of shrimp and dump it straight into your tank

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**Seefoot** · 13th Nov 2019, 12:26

Originally Posted by genki89

It is not about the tolerance. It is about the sudden drop in temperature.

Within 24hrs, if your tank are mature/stabilised, any changes should take time. If your temperature hover around 30 most of the time, you should attach the chiller and run it at 28.

Slowly reduce the temperature over a period of time. By reducing the temperature from 30 to 25 within hours, it is the same as buying a new pack of shrimp and dump it straight into your tank

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I really neglectively overlook at this. thanks bro

**Seefoot** · 13th Nov 2019, 12:29

At this point i already lower the temperature to 28 degreeC. should i gradually decrease the temp? hope they 'll get through this for my mistake.

**genki89** · 13th Nov 2019, 14:20

Wait for some time and observe.

Once your shrimp settle, usually by their behaviour and colour, u may want to reduce 1 degree every 24-48 hours.

If your tank has been running at 25 for the past 24 hrs and u switch back to 28, u are actually stressing them again...

I will suggest not to do anything beyond this point and observe. Reduce the temperature couple of days later by 1 degree each time until your desired temperature.

Assuming u will need to reach 25 from 28, I reckon 1 week. You are lucky it is RCS, if it is CRS/cardinals, your tank would probably be 1/2 or lesser than your current shrimp populations.

Not to worry, mistakes are part of growing. Happy shrimp keeping

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**Seefoot** · 14th Nov 2019, 10:23

ok will take note. the shrimps has settle down and active again thanks for the tips Genki89.

**aero** · 21st Nov 2019, 16:40

Can upgrade to CRS liao. Sell your RCS and buy CRS. Dont waste chiller on such cheap shrimp.I think cardinals hate chiller they're from tropical sulawesi anyway.