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Old 04-02-2010, 09:55 PM   #1 
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Join Date: Mar 2010
water change for betta tank?

i'm planning transfer my betta to a new tank(20g with filter)
but i have no idea about water changes.
my old tank is 1.5g and i do 100% water changes every 4-5 days,for this new tank,i really don't know what to do,please give me some advice.
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Old 04-03-2010, 12:35 AM   #2 
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Join Date: Aug 2009
Location: Vancouver, Canada
Okay first of all you should fishless cycle it, changing the water 100% in a 20g would be a nightmare.

When cycled a betta will hardly make a dent in the nitrates so you would only really need to clean it maybe 5% per week, 105 every two weeks, or consider going Walstad-style and do away with water changes completely (Warning... Walstad tanks take a lot of research to pull off!!!)
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Old 04-03-2010, 12:03 PM   #3 
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+1 On fishless cycling. It's better to wait a month than waste a month with work :)

I think kelly meant "... maybe 5% per week, 10% every two weeks...", lol. If someone manages to do 105% change, call me immediately. Lol :)
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Old 04-03-2010, 04:45 PM   #4 
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Hahaha, 105% changes. I've heard they're really hard to do...
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