dimanche 21 septembre 2014

Fish dying--help! (yeah, you've never heard this before)

There was a post on a website about saltwater fish dying that I was reading and saw this response:



"Do you have any algae problems?

.. The swimming around like crazy part makes me think nitrites are high or oxygen deficient.. Were you ever able to notice a change in breathing patterns?"





So I have a question that was motivated from reading that response about fish swimming like crazy and a change in breathing patterns.

I have been cycling my first saltwater tank ever for the past 6 weeks. I bought a 28-gallon nano-cube tank. I started out by mixing my own salt water using the salt from the fish store, tap water, adding dechlorinating drops, and then adding bacteria once a day. After I got the salt water to 1.021, the store where I bought the tank gave me two damsel fish, 5 snails, and 6 hermit crabs. The two fish died right away and so did 4 of the snails. Since then, I was adding bacteria each day and feeding the crabs once a day with a pinch of flake food I was sold from the store. The temperature has been 80. I have done 3 water changes of 25% each in the past 6 weeks and each week I have taken a sample of water to the store for testing. I have always kept the filter running continuously rather than on some off and on sequence, per the store's recommendation.

About 2-3 weeks ago, I was told at the store that my ammonia was good, but the nitrites were still an issue. After the third water change recently, I took another sample to the store today and they said the nitrites were now good as well. In the past 3 or so weeks, I've had some noticeable green algae regularly build up on the sides of the tank which I have cleaned off each time.

Since the water was good for ammonia, nitrites and salinity, the store salesperson said I could again put in some fish. I got 4 more snails for free as a replacement for the previous ones I lost so quickly. I also bought a small blue tang and a small clown fish. I left the bags sitting in the tank for about 30 minutes and then poured the fish and snails into the tank.

Here's where I wonder about oxygen and the breathing symptom. The clown fish seems ok, but 2-3 hours after they were all put in the tank, the blue tang started swimming straight up and constantly sucking at the top of the water, as if it was trying to get enough oxygen, but couldn't. I looked at it a little while later and it was dead......AGGGHHH! I will add that the blue tang did seem to be swimming around rather frantically shortly after I put it into the water.

Can anyone tell me if this sounds like a symptom they recognize and how I can change the conditions to stop this from happening again? Is it possibly an oxygenation issue?

(by the way, I typed the above question last night; it's now morning and the clown fish doesn't look like it's doing too good, though it isn't desperately sucking at the top of the tank)

Thanks much




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