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mysteria
Joined: 23 Jan 2006
Posts: 21
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Hi!
I've had a very bad night 
yesterday I changed some water in my 60l tank, inhabited by apisto. borelli, Poecilia sp. "Endler", Corydoras pygmaeus and Otocinclus macrospilus and my red fire shrimp;
an hour after the exchange, some fish behaved "funny", 3 hours later, most of the fish were dead (all the endler, some corys) and some shrimp;
this morning, I didn't see any living shrimp, and only the otocinclus and the borelli are still arlive;
I did another waterexchange (think it was necesary after all the dead), and now I can only hope;
heare my values:
ph 7,5
gh 7
kh 5
no2 0
any ideas?
cu,
steffi |
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chrisp
Crustaforum-Team
Age: 36
Joined: 15 Jan 2006
Posts: 83
Location: 46537 Dinslaken
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Hello Steffi,
this is a toxic reaction. Thomething poison would be in the water.
Perhaps Chlor?! It's not a infection - that isn't possible. |
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Greetz
Christian
German Page!
Sometimes you lose and sometimes the others win |
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weisswasser
Crustaforum-Team
Age: 29
Joined: 23 Jan 2006
Posts: 59
Location: Sasbachwalden
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Steffi, I feel so sorry...
Infections, whether infesting fish or shrimps always need time, usually days to develope noticeable symptoms and don't occur within a water change. So Christian is absolutely right on that - it must have been some toxical substance in your changing water... conceivably chlorine.
Snuffle the water that comes straight out of the faucet - does it slightly smell like "swimming pool"? Whereby imperceptible amounts of chlorine might already cause health damage or even death to your fresh water tank inhabitants...
Does anybody know how to determine residuals of chlorine in water? |
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Kind regards,
Claudine |
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mysteria
Joined: 23 Jan 2006
Posts: 21
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Hi!
that was my first thought too! after the flood in autum 2005 there has been added some chlore to the munic water; currently there are some rumors, because of all the melting water, but nothing specific!
I'm still trying to get an answer from my supplier, but so far no reaction (as anticipated!!)
still no shrimp in my tank, but some more death!
the water doesn't smell like a swimming pool and it has been outgased (supposed to eliminate the chlore) while drawing! I'm soooooo saaaad! all my beloved shrimp dead! I still can't belive it! I'm so furios with myself! How could I be so careless??
ch,
steffi |
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Daudin
Age: 29
Joined: 05 Mar 2006
Posts: 1
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Hi,
what was pH and concentration of ammonia before and after water exchange? Increase of pH (above 7) can cause conversion of ammonium form NH4+ to more dangerou form NH3. |
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mysteria
Joined: 23 Jan 2006
Posts: 21
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Hi!
thanks, but I knew that and checked it, but nothing unusal;
it seems that my watersupplier "cleaned" its tubes; that might cause some "problems", but nothing was reported!
cu,
steffi |
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jwarper
Age: 28
Joined: 17 Mar 2008
Posts: 2
Location: Chicago, IL
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| Its always good to let your change water sit out overnight before you add it to the tank. Before adding the water, make sure to test it. Also, add the new water very slowly. The absolute "safest" way is by a drip method, but if you cannot use that, slowly add a little of the water every 15 minutes or so. |
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Ulli Bauer
Crustaforum-Team
Age: 34
Joined: 04 Mar 2008
Posts: 290
Location: Weinstadt
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Yeah,
it's also a good idea to draw the water from a spray faucet in order to expel chlorine.
Cheers
Ulli |
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_________________
If it ain't broken, don't repair it. |
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