Est Tank want to add filter question

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Hevic

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Hey!
Our comets spawned just over summer, and we set up a 75 litre tank, which currently holds about eight 1 inch fish.
It's currently unfiltered, and I know it should be, but i'm worried introducing the filter will knock off all the fish, once the nitro cycle starts.
30% of the water does get changed every week. And it is full of plants

So the short of it is:
Is there a way that a filter can be put into the tank without killing all the fish?
I really dont want to kill the little guys!

Note: i dont really know any of the specs of the tank right now sorry.
Thanks!
 

Jaysee

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You are concerned a filter will kill the 1 inch fish?
 

bubblynutter

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Jaysee, he is concerned that there is potential for a mini cycle from adding a filter to a previously unfiltered tank.

I would suggest that he adds filter media to the established tank to get seeded for 1-2 weeks, then addes the new filter to the fry tank. Should prevent any mini-cycles.

I would strongly recommend testing the parameters of the fry tank, and posting them here so we have more to go off...
 
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Hevic

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Er, I'm a she
Thanks bubblynutter, I was thinking of putting in the media for a week or so before starting the filter, glad you suggested it too
I'll have to get a new test kit, ours is pretty old and missing pieces
 

Nutter

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Welcome to Fishlore Hevic.

Good suggestion there from Bubblynutter. To be honest though if the tank is already cycled, then adding a filter won't result in an ammonia spike anyway. All that will happen is the good bacteria will colonise the filter media. If you have lots of plants they will consume most of the ammonia that may be produced anyway. They need to be healthy plants that are growing well though.
 

bubblynutter

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agree with nutter. Best to provide parameters so we can provide accurate advice. Just my opinion.
 

Nutter

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bubblynutter said:
agree with nutter. Best to provide parameters so we can provide accurate advice. Just my opinion.
YUP!! Exact parameters are always good.
 
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