Question about algae. - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 12 Old 09-19-2010, 03:15 PM Thread Starter
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Size: 20 gallon
Temp: 78 F
Ammonia: 0ppm
Nitrite: 0ppm
Nitrate: 5ppm

Fish in tank:
1 - platy
1 - danio (I know.. I need more)
1 - guppy
1 - honey gourami
5 - cherry barbs
1 - oto (I know.. I need more)

Tanks been running for 2 months. Was cycled with fish 3 weeks after set up. Didn't lose any fish during the cycle. The now deceased molly, guppy,danio, and oto was transferred from previous 2g tank. It also is sparsely planted right now.

I feed Tetra Min and Tetra Color, along with blood worms once a week.

The only thing going into the water is water conditioner.
I do a water change once a week of 25%, even though ammonia/nitrites remain at 0 and nitrates at 5-10ppm.

My molly died on friday after I posted. =/ I'm hoping by finding out what was wrong i can prevent it for other fish. He also wasn't very competitive for food. I don't know if this would play a factor.
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post #12 of 12 Old 09-19-2010, 07:37 PM
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If the molly went through the cycling, that is most likely the cause of its death. Mollys are highly sensitive to ammonia and if they are in a tank during the cycling phase they frequently die shortly after. I have this from someone who raises mollys commercially (in a magazine article). If the other fish are now fine, I would not worry.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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