adamb131 Posted October 6, 2004 Share Posted October 6, 2004 Hi.. i've been on the forums for some time now but this is my first post. Though, unfortunatly, under emergency circumstances. Last 2-3 days I've been loosing lots of bristlenose babies from a small tank that i use to grow them in once i take them off their dad's. I've just fished out 20 bodies... The tank is only 13x9x12 in... and there was about 70-80 bn's up to 25mm in there. I think maybe just too many fish. Anyone got any opinions on what could have caused the sudden die off!?? I've lost about 2/3's of them so-far... going to fish some more bodies... Regards AdamS Link to comment Share on other sites More sharing options...
Ducksta Posted October 6, 2004 Share Posted October 6, 2004 Mate the tank may have just crashed from overpopulation. Although if you were well on top of water changes and stuff that should never happen? Give us a rundown on everything thats happening at the moment. How long has the fry tank been up and running? Any problems before this? Do you overfeed or is it possible some food (like an old chunk of pumpkin or zucchini) is somewhere rotting? How is the tank setup? Is there wood for them to chew on? gravel or bare glass? Did you do a water change recently? Do anything differently? add anything new? Did you have people over on the long weekend who may have done something? (sad to think it but my mates poisoned a tank a while ago, thought it might be funny or whatever, not so much welcome in my house anymore ) there is a million possible reasons this could have happened. My guess though would be a reaction to some action by you or someone else in the tank rather than a freak random event like airborne parasites found their way in. Link to comment Share on other sites More sharing options...
Brett4Perth Posted October 6, 2004 Share Posted October 6, 2004 One cubic foot of water and about 80inches of fish. You would need heaps of water changes to maintain that density. Cheers Brett Link to comment Share on other sites More sharing options...
Gigitt Posted October 11, 2004 Share Posted October 11, 2004 Monitor you PH, Amonia and nitrate levels - you dont want to crash your tank and poison you babies. Also I have read that DO NOT do any water changes for 3-4 weeks as this kills the young do to rapid change. But you will need to keep an eye on the tank parameters. Do you have another tank or water container that you can age your water incase you need to do a small water change? Link to comment Share on other sites More sharing options...
YeW Posted October 11, 2004 Share Posted October 11, 2004 As you have you have suggested the tank is simply WAY too small. Get an 80 litre tank (or preferably larger). I'd think the water chemistry would change rapidly in a small volume and, I'd guess, thats what's killing your fry. Link to comment Share on other sites More sharing options...
ViS Posted October 11, 2004 Share Posted October 11, 2004 Along with the fact that the tank is too small, you really need to leave BN fry in with the parents for a few weeks at least. They eat their parents faeces which builds up the beneficial bacteria levels in their gut and prevents them from developing infection and disease (and just makes them a stronger fish all around). I don't remove my fry from the breeding tank until they hit 2-3 cm and I rarely, if ever, lose a fish. Link to comment Share on other sites More sharing options...
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