Help! Shrimps dying after molting

[SevenAces]

Hi All,

My CRS shrimps have been dying lately after molting (for about 3 weeks). I will see shells on the ground and there will be shrimps with agitated movement (e.g. jumping around frantically, swimming upside down, lying upside down) and after a while or 1 or 2 days they died. (They did molt successfully.)

My water parameters:
GH: 6
KH: 2
pH: 6.6
Nitrate: 20ppm
Nitrite: 0ppm
TDS: 160
Ammonia: 0.25
Tank temp: 25c
15% water change every 3 days and using prime seachem for treatment of water. Water changed using 1/3 aged tap water and 2/3 distilled water.

I have put in active carbon in my filter for a few days now but it doesn't seems to work too. CRS shrimps are still dying.

Tank setup-ed about 5 weeks ago.

I'm unable to figure out the problem. Can any experts advise? Thanks in advance.

[kaen130]

Hi Bro, Ammonia have to be zero before u put in shrimp. If u don't keep plants, put some floating duckweed to suck up the nitrate


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[SevenAces]

Thanks for reply. So it could be an ammonia problem? I have some plants in the tank and floating hornwarts. Other shrimps that are not molting looks fine in the tank.

[Dscheng]

Obvious your tank water is not properly cycled yet. Ammonia, nitrite or even nitrates must be kept at 0 at times. you can do now, is to monitor the reading daily. Probably need to do small amount of water everyday to flush out the toxic.

[SevenAces]

Probably need to do small amount of water everyday to flush out the toxic.

Do you mean small amount of water changes daily?

[Jack See]

keep your TDS at 120 - 130 max... Put plants like moss etc... dont water change daily as you frighten the shrimp.. They r very sensitive... water change once a month if the water is not dirty

[SevenAces]

keep your TDS at 120 - 130 max... Put plants like moss etc... dont water change daily as you frighten the shrimp.. They r very sensitive... water change once a month if the water is not dirty

Thanks will take note!