Fish deaths

I'm fairly new at this (at least recently) but doesn't doing 100% water change add to the risk of a re-cycle?
 
Hi,
I lost my favorite fish last night, Blue/red/black varitus platy. It was one of the first fish in the tank. I medicated this morning. I pulled the carbon filter & kept it out all day. No more deaths since I medicated. I also did not feed this morning. Everyone keep your fingers crossed. Hopefully this will work. Thanks to everyone for all the support. Letty
 
I don't think a 100% water change would screw up a cycle too much, but it would stress the heck out of the tanks residents. One of the reason for small water changes done often is to maintain a balanced tank.
 
Hound - thats not really true. If done correctly, perhaps the only stressful part of a water change is having a person constantly hanging around the tank fiddling with things... and if you're vacumming gravel, perhaps having a tube moving throughout the tank. However, if you're only doing a water change, then you can probably think of ways to minimize yourself from hanging around the tank. Just make sure that the water going into the tank is simliar in temperature, and pH, and your fish will be fine. I do two 50% water changes in a row once every 1-2 months, and I do 50% water changes once a week, and all of my fish thrive. The zebras in my Malawi tank have bred countless amount of times (though I've never bothered trying to catch the fry in that tank, so they end up getting eaten), and even the tetras in my planted tank have bred several times.

In a nutshell, the more often you do a water change, the more similiar your tank's water will be compared to your tap water. So in an emergency, you can easily do a 100% water change without much fear.

HTH
-Richer
 
I may have to do that. My tap water is very similar to the tank water. I just lost another fish. I have now lost 5 gourami's. The fish with the abrasion is still alive. I seem to be losing mainly gourami's & tetra's now. Although it is hard to guess. I did the antibiotic treatment this morning. The tank is getting pretty empty now. I have a feeling the whole tank is going to die and I will just be starting over. Of course at this point I am getting pretty tired. I am still looking for as many suggestions as possible. I bought a python last night. If I have to do a 100% change I don't want to do it by 5 gallon bucket. At what point should I consider the tank a total loss and euthanize the remaining fish?? They don't appear stressed but then I find a dead one in the plants or stuck to the filter intake. I would hate to think they are suffering. This is the part that really sucks!! At least I know what to do when my cats are sick.
 
Not sure about the anti biotics I'd be afraid that it would kill off all the denitrifing bacteria. I know that this is sort of a shot in the dark but, have you added any decorations switched your foods or has your local utility switched to chloromide(sp) from clorine? I'm mostly into salt water so my ideas may not apply very well to fresh water. Also have you performed an autopsy on any of your fish? I know it sounds kind of gross but, that may be the only way to identify an internal macroscopic parasite like a fluke etc.
hth good luck and keep us posted
chris
 
Hi,
I lost the other angel this afternoon. However I did not lose any over night last night. The time period between deaths is getting longer. I went to my LFS after work today with another water sample. I thought my nitrates were getting high. They were up to 40. I saw another one of my favorite LSF guys. He spent a lot of time testing and asking questions. He had some new ideas to try. I have done 2 antibiotic treatments now. He wants me to do 2 more. He also had me do a 25% water change. He felt 100% at this point would be to much of a stress on them. After the water change he had me add marine salt to the tank. 1 rounded tablespoon to every 5 gallons water in the tank. Hopefully this will work.

To answer the questions from maxilaria, I haven't changed anything. I added a couple of new fish. It seems that they may have been the catalist. I had a couple of deaths before them, but they seem to be what set this off. Unfortunately they are still alive!

I really appreciate everyones tips and suggestions. I will keep everyone posted.

Thanks,
Letty
 
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