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post #1 of 6 (permalink) Old 07-19-2011, 12:02 AM Thread Starter
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Cycling tank question

Hi,
If I put mature canister filter media (Ehfisubstrat, Ehfimech) from my existing filter into a new filter how long will it take for the tank to cycle? When can I add fish/shrimp/snails?

Thanks guys,
RP
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post #2 of 6 (permalink) Old 07-19-2011, 12:08 AM
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It shouldn't take long, but it will depend on the bioload the media can support versus the bioload you actually add to the tank. I personally would do a fishless cycle that way but you could also add fish right away as long as you monitor things and do water changes if needed.
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post #3 of 6 (permalink) Old 07-19-2011, 01:03 AM
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Just keep adding an ammonia source until you see that it disappears pretty fast, once the conditions are stable add the fish/inverts. Of course it will cycle faster because of the introduction of the bacteria.

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post #4 of 6 (permalink) Old 07-19-2011, 01:09 AM
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nitrifying bacteria duplicate ever 15-20 hours. if you transfer half your media. in one day with available food, you will be back to full capacity. make sure you have some decaying food, and/or transfer some tank water from established tank

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post #5 of 6 (permalink) Old 07-19-2011, 03:36 AM
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Quote:
Originally Posted by HD Blazingwolf View Post
nitrifying bacteria duplicate ever 15-20 hours. if you transfer half your media. in one day with available food, you will be back to full capacity. make sure you have some decaying food, and/or transfer some tank water from established tank
Just remember that your tank BB is not just in the filter media. It is on the plants, substrate, hardscape, etc. as well.

That being said, if you transfer over media into a new set-up I would add some fish right away so the BB doesn't starve off, which it can quickly do without a food source. Depending on the tank size probably just a fish or two.
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post #6 of 6 (permalink) Old 07-19-2011, 12:21 PM Thread Starter
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Very, very cool. Thanks for your replies guys//girls.
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