Beneficial bacteria - The Planted Tank Forum
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post #1 of 2 (permalink) Old 09-18-2017, 08:33 AM Thread Starter
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Beneficial bacteria

Hey guys I have a fully cycled tank and have just put a bag of media and balls in it to grow bacteria on and then transfer the bag to a new tank to boost up the nitrogen cycles

My question is how long will it take for the bacteria to colonize on the bag, it does take up a good size of the water colomn

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post #2 of 2 (permalink) Old 09-18-2017, 08:41 AM
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Two weeks minimum IMHO
Do note that the amount of bacteria in donor tank will only ever be as much as is needed for present fish or fishes in donor tank.
I see only a betta in donor tank,so would not get too wild with stocking the new tank with fishes, but rather do it slowly a few small fish at a time ,while keeping and eye out for ammonia level's other than zero.
Is good that you have a donor tank with already established bacterial colony,just can't suddenly add a dozen fishes to new tank.
Need to let the bacteria multiply a few small fish at a time.
Once bacterial colony is established it can multiply fairly quickly (days), but not quick enough to allow too many fishes at one go.
Would be different if donor tank had fairly large fish population.
Lot's of plant's can help also.
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