I have 2 Barbs left.

[Smark]

My tank will sustain Tetras Cories and Butterfly Pleco's But my Barbs will not survive in my 20 gallon tank.
Here are my readings. My PH level is over 8 but my local fish store has the same PH level as mine. I was told to just leave it where it is at.
Nitrite is at 0 PPM
Nitrate is at 0 PPM
Ammonia is at 0

I just did a complete tank change because I am getting desperate. I am still using the same rocks and plants with out using any bleach or cleanser.
I tried to atach a picture of my last Barb. I am sad.

 

[Lotus]

Your 20g tank as listed in your signature has way too many fish in it. Stress may be the problem. If you have stocked it quickly, you may have introduced a disease.

 

[Smark]

My last albino Barb just swims into the glass and the rocks. This disease must only affect Barbs because the other fish are OK and happy. I am down to 2 Barbs but I think the albino will not last the night.

 

[Smark]

How do you cure a dissease.

 

[Smark]

Will a bad tank heater affect barbs in this manner? Are barbs more sesative to Temp than Tetra? Could this be my problem?

 

[Lotus]

Yes, a bad heater could affect some fish and not others. What kind of temperature min./max. did you have or are you having?

 

[Ariaanna]

In my experience, if you have too few barbs, they'll kill each other trying to establish a pecking oder because the aggression is too concentrated. If you keep 6+ barbs they school much tighter and establish a pecking order much more readily.

I don't think you'll be able to keep 6+ tiger barbs in a 20 gallon tank, though, as they're very active swimmers and grow to be about 3 inches long.

I hope this helped!

 

[wilsonriverfish]

barbs cannot withstand very high temperatures my heater was broke when i got it and i hat a school of barbs and the water got to 90 degrees and they all died