I have had my tank set-up since Jan. of this year. Every thing has been going really well till yesterday. I did a regular water change and everything looked great, but when I got up this morning 7 of my fish were dead. Not all my fished died but 7 was like half. I have a 75 gallon tank. I did a test on the water everything was good.
2007-07-23 07:19:16 · 9 answers · asked by Anonymous in Pets ➔ Fish
Most likely either temperature shock or pH shock. When yousay everything was good, that really says nothing in regards to the pH. Is it very similar to the pH of the tank before the water change? Also remember that pH can "bounce" start out low and rise over the course of a day, so it's possible it was lower right after the change and popped back up to a "normal" reading. Check your tapwater pH to see if it's close to that in your tank. Also check the tap water for ammonia or nitrites that could be high, but dropped again in the tank overnight. If any reading seems a bit strange, have the water checked at a pet shop to be sure your kit hasen't gone bad.
Of course, the dechlorinator question is totally valid as well. I can't tell you how many times I have forgotten to dechlorinate new water over the years. That can happen to anyone.
MM
2007-07-23 07:26:16 · answer #1 · answered by magicman116 7 · 3⤊ 0⤋
Fresh or salt, I'm not sure that really matters all that much, because one should assume that if you have been doing your changes, and since this is in Jan, you've done the same thing over and over. This is six months into the tank age, your readings are showing 0 ammonia and nitrites. Would also think you have 0 nitrates, and as long as not over 40 thats not much of an issue.
What is the population of your tank? Total fish and species? This is a very tricky question because usually it's something in the water chemistry but this doesn't appear to be the issue. Did you see any external signs of infection or distress prior to the change?
JV
2007-07-23 14:27:08 · answer #2 · answered by I am Legend 7 · 2⤊ 0⤋
Maybe something go into the tank? It seems strange that so many would die at once. I would quarantine the fish you have now and see how they do once out of your tank. If they seem to do better... I know it might suck, but you may have to drain the 75 gallon and clean everything! I had to do that once after a snail invasion. But, once everything was properly cleaned, everything went fine. Just make sure you let the newly set-up tank run without any fish for a couple of days.
2007-07-23 14:27:03 · answer #3 · answered by MisselToe 2 · 0⤊ 0⤋
There might of been too many fish in a tank..or it depends on what kind of figh there are some might of fought each other
2007-07-23 16:16:09 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Absolutely not enough info to bother to comment, can you update your question to cover some variables please. Water temp, fish types, what additives, how much water changed and anything else that might help clarify.
2007-07-27 03:17:00 · answer #5 · answered by Renee N 3 · 0⤊ 0⤋
do not remove more then 25 % of water it is bad for them to get used to all that new water
2007-07-23 18:16:44 · answer #6 · answered by eelliot_47 1 · 0⤊ 0⤋
I know it sounds like a silly question, but did you put in the chlorine remover?
2007-07-23 14:23:16 · answer #7 · answered by Tina N 4 · 1⤊ 2⤋
did you leave the water out before you changed it??? tap water has chlorine in it that can kill fish...for a freash water tank
if its a saltwater i have no clue!!! probably one tiny bug, salt water is sooooo tempremental!!!!
2007-07-23 14:25:36 · answer #8 · answered by RC 3 · 0⤊ 4⤋
need to know if its fresh or salt water?
2007-07-23 14:23:19 · answer #9 · answered by chris l 1 · 1⤊ 2⤋