Tropical Fish Keeping - Aquarium fish care and resources

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sweetpea236 08-02-2009 01:41 PM

Help Please
We have a 55 gallon aquarium, that has been set up since Easter weekend. We were very lucky to have filter media and rocks to get this tank going. Since two weeks after we set this up and had fish in it, we have had zero readings on all tests (ammonia, nitrites, nitrates and the PH is 7). The question we have, is why are we finding dead fish weekly? We have lost 1 blue neon tetra, 1 gourami, 1 male swordtail, cherry barb and now it looks like the other gourami is facing death also. This is what is left in the aquarium.
3 Zebra Danios
2 Female swordtails,
1 baby swordtail
3 Blue neons
3 Ottos
4 Little tetras (sorry can not remember the name of them)
3 Cory's
This is the complete list of the fish we have in the 55 gallon. We test the water weekly and have never had any troubles with the water. Can someone explain why we are having issues?

aunt kymmie 08-02-2009 01:48 PM

Unless this tank is very heavily planted I find it odd that you have no readings for nitrate. A cycled tank will register nitrates. How often do you perform water changes?? Did you add all your fish at once?? Any and all info you can provide will help someone come up with answers.

PS. Welcome to the forum!

sweetpea236 08-02-2009 09:30 PM

We do have about 4 live plants in this tank. We did not add all these fish at one time either. We actually started with the 3 little danios. Then about every 7 - 10 days we added 3 more fish. We do partial water changes every three weeks. We use the liquid test kit for everything and it does not show nitrates at all. It never did. It was even tested at a Petco and a local aquarium shop. We just got home tonight, and we had a blue neon floating in the aquarium. This is getting scary for us. I am willing to listen to any and all advice.

Unrulyevil 08-03-2009 08:56 AM

need more information on your tank.

where do you get your water?
where do you live?
what kind of filter do you have?
do you have air pump?
what kind of plants you have and how big they are?
what is the light schedule for your tank?
what kind of substrate you have?
do you have driftwood?
we need to know everything! all the details
are there any signs of sick fish? fungus? holes? redness? worms?

Guppyluver4ever 08-03-2009 03:12 PM

id say start do 20% water changes every 2 weeks... and go ahead and give us more info

Fishin Pole 08-03-2009 03:26 PM

few things i noticed, you didnt mention using a water conditioner.......What do you do when you perform your water changes?.....Do you add any type of conditioner to your water?..........Another good practice, would be to do WEEKLY water changes............

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