GENOCIDE!!!

so my theory on the oxygen level was off, huh? I couldn't imagine anything killing EVERYTHING in such a short time except for deoxygenation...

the tank was 18 inches to the wall... the 13" includes fins.. body was probably only 9 - 10 inches so he had 18 by 36 swimming area. I knew my tank was not optimal, but the day before I went on my business trip, i filled a 135 and began cycling... its a shame.

the goal now, (you can see my detailed plan in the equipment forum) is to get the 55 to be strictly a planted and have the livestock in the 135 and have both cycling through my 25 wet/dry.

my purpose here is to figure out what could possibly kill nearly 30 fish in an hour.
 
It is somewhat strange that you're entire stock died within an hour....sure your roommate is trustworthy? ;) But you're water parameters were definitely less than ideal. You still haven't mentioned how long the tank has been running....
 
ah, tank has been up and running for around 3 months

the pacu was a "gift" from someone moving out of town... and the others were company.
 
and the roommate had two fish in the tank (his shark catfish things), and was REALLY into the fish (just not the daily upkeep)
 
Wasn't there any power outage of some sort? I'm thinking that + the presence of ammonia and nitrites in the water can be lethal to fish in a rather "quick" manner. :uhoh:


And by the way, did you and your roommate had a fight recently :nutkick: ? Maybe he.... uhmm nevermind :grinno:
 
The effects from the algae tablet killet the fish.

The tank was pretty heavily stocked parameters were off, however, that is not going to kill all inhabitants in such as short amt of time.

Olivesaxer, for the planning of restocking your tank, would research on the fish, there compatibility as well as space requirements so this doesnt happen again. Regular water changes, testing parameters with liquid test kits (strips are highly inaccurate and the all in one test strips do not measure ammonia), an appropriate bioload in a cycled tank, only using chemicals to correct problems when absolutely necessary, etc.... will go a long way to a healthy tank with healthy, happy inhabitants.

The algae was most likely caused by too many nitrates in the water, this could have been solved by more frequent, larger water changes and decreasing the bio load of the tank. When you get home, it will be to late to test your water as all parameters i imagine will have spiked due to the dead fish in the tank. Even a water sample taken at the time the fish were dying would be useless now.

Sorry for your loss... Hope we can help you get your tank going again smoothly. :)

Blue
 
Blueiz said:
The effects from the algae tablet killet the fish.

The tank was pretty heavily stocked parameters were off, however, that is not going to kill all inhabitants in such as short amt of time.

Olivesaxer, for the planning of restocking your tank, would research on the fish, there compatibility as well as space requirements so this doesnt happen again. Regular water changes, testing parameters with liquid test kits (strips are highly inaccurate and the all in one test strips do not measure ammonia), an appropriate bioload in a cycled tank, only using chemicals to correct problems when absolutely necessary, etc.... will go a long way to a healthy tank with healthy, happy inhabitants.

The algae was most likely caused by too many nitrates in the water, this could have been solved by more frequent, larger water changes and decreasing the bio load of the tank. When you get home, it will be to late to test your water as all parameters i imagine will have spiked due to the dead fish in the tank. Even a water sample taken at the time the fish were dying would be useless now.

Sorry for your loss... Hope we can help you get your tank going again smoothly. :)

Blue
Click to expand...
I completely agree with my colleagues hypothesis, though I think it was pro bably a chain reaction. the algae killer may have killed off a few of the more sensitive fish, like the neons, which started a chain reaction that caused everything to die, and this can all be traced back to the fact that your tank was overstocked from the beginning. I agree with the others in that I think you should ask us first before you restock.
 
sounds like a good theory to me...

like i said earlier, goal now is to run the 135 and the 55 together through a 25 w/d.

will, of course, ask for help as the stocking time nears
 
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