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Old 09-22-2011, 01:34 PM   #1 
Fieldz
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Post Filter and water change

I have a 5.5 Gallon aquarium for my betta. Is 100% change once a week fine? The filter only does biological so it doesnt helps at all.

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Old 09-22-2011, 02:16 PM   #2 
Princess Penny
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I'm confused what you mean by "the filter doesn't help at all." What kind of filter is it?
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Old 09-22-2011, 03:05 PM   #3 
ollief9
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If the filter is biological then it is helping. In fact, the bacteria which live in the biological filter are keeping your fish alive. Changing all the water will harm the bacteria and it is unneccessary if your tank is filtered. Consider going down to 50% water changes per week.
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Old 09-22-2011, 05:21 PM   #4 
tf1265
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Agreed - the biological filters are the most important. Especially for a tank of that size with 1 betta in it (meaning it's proportionately a large tank with a small bio-load). What type of filter is it, though?

Don't change 100% of the water with a biological filter. I wouldn't change more than 50% at a time.
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Old 09-22-2011, 06:34 PM   #5 
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It has some activated coal in it and says biological. Thats it.
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