Losing fish 55 Gallon Tank 

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Glenn G

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Since I have added Red Eye Tetras they are all over the tank swim very quickly. They seem to be dominating the community. It seems that they are causing stress on the tank mates. Since I added a school of (5) a couple of weeks ago I am losing fish often. I have lost both of my Blue Gouramis they were hiding under plants most of time, 1 Angel Fish and 1 Cherry Barb. I am doing weekly water changes of approx 10 -15 % and feeding once a day a pinch of tropical flake food sometimes twice a day. I am curious if I am not feeding enough.

Does anyone have any suggestions. I have a 55 gallon tank with
3 Zebra Danios
1 Leporad Danios
4 Red Eye Tetra
1 Angelfish
1 Chinese Algea Eater
1 Shark silver
 
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Lucy

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Welcome to FishLore!!
I'm really sorry that you've lost some fish.
Do you know the exact readings for ammonia, nitrite and nitrate. Water parameters are always a good thing to rule out first.

Other than stress were the fish showing any symptom of illness?
Were the new fish quarentined?
 

Aquarist

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Good morning and Welcome to Fish Lore Glenn G.!

I have moved your thread to the Freshwater Fish Disease section of the forum to help you to receive more responses.

If you can post the readings requested by Lucy it will be a great help.

I hope you enjoy the site!

Ken
 
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Glenn G

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Used a quick dip strip today
nitrate 20 Safe
nitrite 0.5 Caution
Total Hardness 75 Soft
Total chlorine 0 Safe
Total alkalinity 0 Low
pH - Freshwater 7.8.- 8.4 Alkaline

Based on PH reading would you suggest adding some driftwood to tank?
 
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Lucy

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For most fish, they can adjust to whatever your pH is from the tap. Driftwood looks nice so if you want to add it, go ahead but not because you want to alter the pH.

Did you cycle with these fish in the tank?

The strips can really be inaccurate. You might want to consider getting a good liquid test kit.
Can you get an ammonia reading?

It doesn't look like your tank is fully cycled.
Nitrites are toxic to your fish. I'd guess that's what's going on with your fish.
It would be a good idea to do a series of daily water changes until your readings are 0 ammonia, 0 nitrite with some nitrates showing.
If you use a conditioner like Prime, that will help detoxify any ammonia for 24 hours between changes.

Good luck!
 
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