Help. Please.

[Dreamsofpeace54]

Ok so yesterday around 9 PM, i did my usual 50% water change. Everything was dandy at first i suppose nothing out of the usual.

Wake up today, everything is still fine. Ray decided he wasnt hungrey but i kinda thought it was just the water change still messing with him, i left around 1:30 pm and i just got home maybe an hour ago around 1 AM.

and just about everything is dead. 5 silver dollars, 2 rotkiel severums, 3 dats, and a ray. all the cichlids dats etc were under 4 inches and the ray around 5" disc width. i test the water.

nitrite - 0
nitrate - around 10 ppm
chlorine - 0
temp - 82dF

ph used to around 7.8 and is now around 7.
could that have done it? that slight bit of a change?

i live on a well and we have recently got some snow/rain. i cant test for ammonia right now but my filter were left running during the change. so i dont think thats the issue but will test tomorrow. My ornate, del, and albino sene are fine and 3 severums are still alive.

75 gallon, 48x18x21
filtered by 2x Fluval 405's.
prime used to recommended dosage after change.

WTF HAPPENED!?! what could have possible caused this. was it the ph??
this sucks.

 

[Tongue33]

Ammonia test?

pH?

 

[Dreamsofpeace54]

ph used to around 7.8 and is now around 7.

i cant test for ammonia right now but my filter were left running during the change. so i dont think thats the issue but will test tomorrow.

Will test tomorrow

 

[Tongue33]

pH swing could well have done it...

How are the ones that are close to death acting??

 

[amesbien]

Everyone is back to normal now. No different mood swings than normal (DoP54)

 

[Oni Angel-Hannya]

A jump from 7.0 to 7.8 is not a "slight bit".Its logarithmic,7.1 is a point higher,but 7.2 is one hundred points higher.So imagine 7.8!!!!

 

[beeline]

That's happened to me before. But that was coz the b@stards put more chlorine in the water. I put a bit extra water conditioner in when I do waterchanges. When u got home, what behaviour were the fish displaying (of those that were still alive)?

 

[Dreamsofpeace54]

Bichirs are fine swimming around, and the 3 severums that survived were laying on their side but like amebsien aid they are fine now. My other tanks are also fine now.

And were on a well, so how can they just add chlorine without letting us know, and i did use dechlorinator.

i just dont get it.

 

[beeline]

That is strange. Weren't the fish gasping at the surface at all. Polypterus are hardy fish, they'll survive stuff like that. It's not just chlorine and chloramine that's in the water. Sometimes there's more ammonia and more harmful metals in there that can also kill your fish off quickly.

 

[beeline]

What water conditioner are you using by the way?