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-   -   Fry dying. What am I doing wrong? (http://www.tropicalfishkeeping.com/fish-breeding/fry-dying-what-am-i-doing-41468/)

redpup 04-20-2010 12:50 AM

Fry dying. What am I doing wrong?
 
I have a 55 gal tank with 12 mollies, 6 platies, 8 tetras, and 1 sword. I have been finding babies in the tank so I moved them into a net. When the count reached about 40 (all were doing very well) I moved them into their own 5 gal. tank with a bio filter. I used water from the 55 gal tank. All was going well through the weekend, but when I came home from work tonight most were dead with the majority stuck in the filter. I have about a dozen left. They are the oldest of the lot. I moved them back into the net in the large tank. Any help or suggestions would be greatly appreciated.

Austin 04-20-2010 02:10 PM

Maybe you need a sponge filter or something less powerful. The tank is not cycled most likely, the 5g. So you NEED major water changes, or at least add some sponge or w/e from the 55 gallon to the 5g's filter. The 5 gallon may also not have a heater and may have been too cold or something.

Don't know! but you will likely want a less powerful filter, preferably a sponge type, as they cant get sucked into this, or cover the intake of the filter you currently have (they COULD potentially still get stuck to the intake and die as well though).

Goodluck with the babies!

redpup 04-20-2010 05:41 PM

I have a heater in it, and the water is straight from the 55 gal. I have lost a few more babies through the night, and the remaining don't look too good.I am thinking something probably went wrong with the water. I am now re-thinking just leaving new fry loose in large tank. I will add more places for them to hide. Your info is very helpful Austin. Thank you so much!

ferszty 05-10-2010 06:47 AM

they also grow faster in the large tank i found.

Kristina10 06-11-2010 03:35 AM

maybe if you are mixing the ages they are eating each other.

1077 06-11-2010 04:31 AM

Quote:

Originally Posted by redpup (Post 366341)
I have a heater in it, and the water is straight from the 55 gal. I have lost a few more babies through the night, and the remaining don't look too good.I am thinking something probably went wrong with the water. I am now re-thinking just leaving new fry loose in large tank. I will add more places for them to hide. Your info is very helpful Austin. Thank you so much!


When we say a tank is cycled,it is not the tank or the water, but rather the filter that we wait on to develop a healthy bacterial colony that works to process ammonia created by the fish,and fish foods. Simply moving water from a cycled tank will not mean the new tank is cycled.
What you might consider is placing a small sponge filter in your large tank and let it run 24 /7. Then when you wish to move fish to breeder tank ,or grow out tank,, you would simply need to move the sponge filter from the main tank to the grow out tank and this would produce the biofilter for the tank with fry.
Could also place a small hang on the back filter on your large tank and let it run 24 /7 and when fry tank is needed,simply move the small filter from the large tank to the small tank.
Keep in mind that for sponge filter or small hang on the back filter to be effective,, they will need to run in the cycled aquarium for minimum of four weeks.Could also simply take some filter material from the cycled filter on your large tank and stuff some of the material in a new filter when you place it on the fry tank.
In any event,, water from a cycled aquarium does not provide much in the way of bacteria and it is the filter where the majority of the good bacteria is found.

Hobo joe 06-11-2010 05:59 AM

how old were the babies when they started dying (i apologize if i missed this), and were you feeding them?

fryup 06-11-2010 04:27 PM

Quote:

Originally Posted by ferszty (Post 380699)
they also grow faster in the large tank i found.

i agree 100% with this.....good luck with the ones you have left...if you think youve got it bad.....i had 57 guppy fry in there own CYCLED, FILTERED, HEATED TANK and they all slowly died with in 2 week...i have 1 left that is aprox 3-4 month old and hasnt grown at all :(...i think i mite have to "remove" it :(


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