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Cory behaviour and colour change

This is a discussion on Cory behaviour and colour change within the Catfish forums, part of the Freshwater and Tropical Fish category; --> Ok well this is my thoughts for adding new fish tomorrow Get 11 new Corys Return the tetras Maybe get some more mollies (but ...

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Cory behaviour and colour change
Old 02-23-2013, 01:11 AM   #21
 
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Ok well this is my thoughts for adding new fish tomorrow

Get 11 new Corys
Return the tetras
Maybe get some more mollies (but not balloon mollies) and maybe get 6 of them as well

Then my 40 gal / 3 foot tank will have

12 x Corys
2 x angel fish
2 x balloon mollies
6 x mollies

Does this seem ok?

Thanks for all your help everyone!!!
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Old 02-23-2013, 01:17 AM   #22
 
Before adding new fish, do you know the parameters of your water? Adding fish to water conditions that they do not agree with increase the odds of this situation occurring again.
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Old 02-23-2013, 12:53 PM   #23
 
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Yes, we should pin down the exact numbers for GH and pH. These can be for the tap water, obtained from the municipal water supply.

All livebearers must have moderately hard water (with a basic pH, meaning above 7). But mollys are more demanding in this respect, and the fact that they can even manage in marine setups illustrates their need for hard water. Which is at complete odds with angelfish.

If the GH is moderately hard and the pH close to neutral (low 7's) the angelfish will be OK and some other tankmates might be better than more molly.
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Old 02-23-2013, 01:50 PM   #24
 
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Ok folks attached is the water analysis for the area I live in. You need to look at the 'Prospent' column on the second page

In terms of the current readings of my tank we have

pH 7.6
Ammonia 0
Nitrite 0
Nitrate 0

These levels are due to the fact that I did a good sized water change to start removing the salt that I added for the mollies.
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Old 02-23-2013, 01:53 PM   #25
 
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http://www.sydneywater.com.au/Public...erAnalysis.pdf

This is the water table analysis
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Old 02-23-2013, 02:56 PM   #26
 
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According to that info, you have soft water, so I would avoid livebearers; mollies will not do well in this soft water. The pH is on the high side, but this should tend to lower in the aquarium.

This opens up a lot of options. Angelfish will be fine. Just avoid active swimming fish (no barb, danio species), and no likely fin nippers.

Byron.
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Old 02-23-2013, 02:58 PM   #27
 
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I will also add to what Bryon has said and advise to be cautious with some tetras, most will do great but some can also be fin nippers. The fish profile on this forum should help you out with your selection.

:)
~Natalie
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