Dixon1990 Posted February 11, 2009 Report Share Posted February 11, 2009 Once again i get a mass fish death in my 300L SA tank :evil: Count is 1 female Molly 7 Pencilfish :evil: And Missing: 6 Ember tetras 1 Borelli/steelblue All due to the airline being pinched in the hood(i think) Not going to be cheap to replace! :evil: Quote Link to comment Share on other sites More sharing options...
Zabman Posted February 11, 2009 Report Share Posted February 11, 2009 forgive my ignorance - but how does an airline jam cause your fish deaths? Quote Link to comment Share on other sites More sharing options...
Dixon1990 Posted February 11, 2009 Author Report Share Posted February 11, 2009 The waters quite warm and there is nothing but the airline breaking the surface so when it jammed the water became very low in oxygen. Well atleast i think this is what happened. The remaining fish were fine after 5 minutes of the airpump back on Quote Link to comment Share on other sites More sharing options...
Zabman Posted February 11, 2009 Report Share Posted February 11, 2009 hmm.. I haven't had any problems and have noticed my 4 ft has been as high as 34! Maybe I'm lucky haha - will definately keep an eye on it though. Quote Link to comment Share on other sites More sharing options...
RochelleMay Posted February 11, 2009 Report Share Posted February 11, 2009 Do keep an eye on it Zabman, thats one of the factors of me loosing some of my fish. There was more involved but the heat and too little oxygen just stressed them out to much. Sorry to hear that Dixon its not nice. Chin up Quote Link to comment Share on other sites More sharing options...
Barrie Posted February 11, 2009 Report Share Posted February 11, 2009 the type of fish makes a difference as well I reciently had no air (pump) from sunday untill thursday evening with out any deaths another advantage of the mighty Killi Quote Link to comment Share on other sites More sharing options...
Caryl Posted February 11, 2009 Report Share Posted February 11, 2009 Type of fish, number of plants, water temperature, and fish stock levels all make a difference. Sorry for the losses. Quote Link to comment Share on other sites More sharing options...
Dixon1990 Posted February 12, 2009 Author Report Share Posted February 12, 2009 Not too many plants, mainly heaps of small fish and all the flow was near the bottom, thats changed now. Now off to get a couple pencilfish from organism for the 1 surviving pencilfish. And Once again my 2 cardinal tetras survive, These guys are invincible! Quote Link to comment Share on other sites More sharing options...
Dixon1990 Posted February 12, 2009 Author Report Share Posted February 12, 2009 So i cam back with 2 more pencilfish and 3 cardinals, and not money :evil: :lol: Quote Link to comment Share on other sites More sharing options...
Stella Posted February 12, 2009 Report Share Posted February 12, 2009 If it really was the airline, then your tank was overstocked. Well, overstocked for life without the aerator, stocked survivably with the airline. By adding more fish you are choosing to keep the risk of losing fish if anything happens to the aerator. The temperature probably was an aggravating factor, so if anything happens to the aeration over summer you risk fish death, over winter you might get away with it. You sure having the high stocking level is worth the risk? Sorry for your loss, losing fish always hurts Quote Link to comment Share on other sites More sharing options...
Neon Posted February 12, 2009 Report Share Posted February 12, 2009 sorry to hear about it Dixon Quote Link to comment Share on other sites More sharing options...
Dixon1990 Posted February 12, 2009 Author Report Share Posted February 12, 2009 If it really was the airline, then your tank was overstocked. Well, overstocked for life without the aerator, stocked survivably with the airline. By adding more fish you are choosing to keep the risk of losing fish if anything happens to the aerator. The temperature probably was an aggravating factor, so if anything happens to the aeration over summer you risk fish death, over winter you might get away with it. You sure having the high stocking level is worth the risk? Sorry for your loss, losing fish always hurts Stocking Isn't too high Anothing thing that wouldnt have helped was that the filter pipes need replacing (they are bending/twisting and slowing down the flow) And since the fish died i added another 600lph internal filter so thats now 1200lph of internal filtration and 1200 of external, so i doubt this tank is overstocked :-? Cant find a thermometer :-? lol, Will get one tomorrow Quote Link to comment Share on other sites More sharing options...
phoenix44 Posted February 12, 2009 Report Share Posted February 12, 2009 oh no.. that sucks muchly. i :evil: it when that happens. Quote Link to comment Share on other sites More sharing options...
TM Posted February 12, 2009 Report Share Posted February 12, 2009 Does not sound like to many fish to me either. I have a tank with around 80 cherry barbs and about 50 Apisto's, thats getting overstocked but fish are fine Quote Link to comment Share on other sites More sharing options...
Stella Posted February 12, 2009 Report Share Posted February 12, 2009 The filtration sorts out the ammonia-nitrogen-nitrate side of things, the surface area and possible agitation does the oxygen levels. One thing I learned recently which I found quite interesting: an aquarium can't actually be over-filtered biologically. There is only so much ammonia to go around (the amount of course differs tank to tank, season to season etc). The filter provides the media for the bacteria to grow on, but only so many trillions of bacteria can be supported by the bioload of the tank. So you could have the world's hugest filter on the world's smallest tank, and it would have no more actual biological filtration capacity than a much smaller filter. Likewise, running two filters on one tank does not mean you can remove one filter and have the other filter immediately pick up 100% of the slack. It would be more like having two filters running at 50% capacity each, then remove one and the sudden excess food (ammonia) causes a bloom of each bacteria in turn, and in a space of time, the filter will wind up being at 100% capacity for the tank. Now say the removed filter (which was kept alive on another aquarium) is returned. There is now 150% 'capacity' but only enough food for 100%, so 50% of the bacteria starve to death. Their decomposition can cause a further ammonia spike, feeding the remaining bacteria, but eventually it will get back to two filters running at 50% capacity. (this is all ignoring allowances for different rates of water flow and oxygen, which is so dependent on the setup, and doesn't change the general rule) I am NOT saying that having excess filtration is a bad thing. Redundancy is better than underfiltration. And is also gives you an emergency backup pre-seeded filter if something goes drastically wrong. Man, I am exhausted. You wouldn't believe it but I can barely keep my eyes open, my head hurts and I am about to have a nap on the couch! I have to stop finding this stuff interesting. Overstocking is fine till something goes wrong :roll: Quote Link to comment Share on other sites More sharing options...
phoenix44 Posted February 12, 2009 Report Share Posted February 12, 2009 300L and you have fewer fish in there than I do, so i also do not think your tank is over stocked. i cannot understand how other people are struggling with temperatures soaring... my tank has a lot of lighting, and the heater is always on, but the temp stays at a steady 29.1. It went up to 30.0 yesterday, but fish were perfectly fine... Quote Link to comment Share on other sites More sharing options...
Stella Posted February 12, 2009 Report Share Posted February 12, 2009 Phoenix, it is so individual. It depends on the temp fluctuation of the room, the size of the tank, the escape of heat away from aquarium appliances and the aquarium. Quote Link to comment Share on other sites More sharing options...
Discusguru Posted February 12, 2009 Report Share Posted February 12, 2009 Having more filters running on a tank is good on the mechanical filtering part. On the bio part they will perform as Stella said. Overstocking a tank won't won't kill the fish if you perform more waterchanges. You don't have to cut back on feeding either. All you have to do is waterchanges. Remember to do more waterchanges :bounce: :bounce: ron Quote Link to comment Share on other sites More sharing options...
Caper Posted February 12, 2009 Report Share Posted February 12, 2009 Stella wrote: One thing I learned recently which I found quite interesting: an aquarium can't actually be over-filtered biologically. There is only so much ammonia to go around (the amount of course differs tank to tank, season to season etc). The filter provides the media for the bacteria to grow on, but only so many trillions of bacteria can be supported by the bioload of the tank. So you could have the world's hugest filter on the world's smallest tank, and it would have no more actual biological filtration capacity than a much smaller filter. Having a bit of trouble trying to figure out what you're saying Stella, now there's a surprise :oops: . First please explain exactly what you mean when you say bioload? Just as an example, say you have a "small" tank and only 4 fish in it but you have 2 "large" filters running. Does it mean that the 4 fish wouln't produce enough waste to seed both filters?????? That there would NOT be enough waste to have good bacteria in both filters? Heck, sorry not explaining very good :oops: Caper Quote Link to comment Share on other sites More sharing options...
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