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Fish Tank Forum • View topic - 160l goldfish tank
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160l goldfish tank

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Re: 160l goldfish tank

Postby Blowfish » Sat Mar 17, 2012 4:08 am

Remember keeping fish is meant to be fun .... 25% once a week will be plenty !!! any more than that willl upset your fishys!!!!!!!!
Keep good water = Keep good fish!!
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Re: 160l goldfish tank

Postby malakye » Sat Mar 17, 2012 2:14 pm

because they are fancies they dont need the 20 gallon per fish so your fine, I wouldn't recommend such big water changes either.
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Re: 160l goldfish tank

Postby cathface » Sat Mar 17, 2012 2:52 pm

well there are two different recommended stocking levels for fancies - either 20g for the first then 10g for every subsequent, or 10g for every fish. even if I go for the latter, I am completely and utterly fully-stocked. they produce such a bioload that it is necessary (and even recommended) to do such big water changes. as I have said before, 25% weekly is not enough for goldfish, unless you have one fancy in a 30g or something. also as I have said before, doing big water changes may upset tropical and marine set ups, but it will not upset a goldfish one. big water changes is preferred amongst expert goldfish keepers, because of how quickly the nitrates climb in goldfish tanks. if I did 25% weekly, I would never lower the nitrates enough.
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Re: 160l goldfish tank

Postby Mick » Sat Mar 17, 2012 4:00 pm

Whoops,Im doing 10% weekly with my fancies ;)
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Re: 160l goldfish tank

Postby malakye » Sat Mar 17, 2012 6:20 pm

We have 4 fancies in a 40 gallon and only do 25% weekly but then we do have a bigger filter so maybe thats why we dont have any nitrate issues.
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Re: 160l goldfish tank

Postby cathface » Sat Mar 17, 2012 10:11 pm

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Re: 160l goldfish tank

Postby malakye » Sat Mar 17, 2012 10:20 pm

Its actually my sons tank, he does weekly water changes of 20-25% and the nitrates are never over 20ppm. He has a Fluval 205 external filter, there's also 2 baby bristlenose babies in the tank with them and an apple snail. He does have a whole load of java ferns in the tank with them too which no doubt helps too.
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Re: 160l goldfish tank

Postby cathface » Sun Mar 18, 2012 12:30 am

ohh I reckon it's all those java ferns that are keeping the nitrates down then. unfortunately I have no real plants in my tank to help me with this, so I just have to remove and keep in check the nitrates manually.
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Re: 160l goldfish tank

Postby malakye » Sun Mar 18, 2012 1:28 am

If you want some java fern let me know I will bring you some up.
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Re: 160l goldfish tank

Postby cathface » Sun Mar 18, 2012 2:18 am

thank you for the very kind offer! but don't worry about it, I'm keeping my goldie tank silk and minimal. :)
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