How To Jumpstart Cycle my new 130g using my 55g? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 7 Old 07-13-2009, 11:23 PM Thread Starter
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How To Jumpstart Cycle my new 130g using my 55g?

So I nailed an almost brand new 130g off of Craigslist for $100. It's just the tank and it appears I'll need to build a center brace for one that allegedly broke. Anyhow...

Question. I have no desire to again wait 1-3 months to cycle my tank. So I'd like to somehow jumpstart cycle the 130 using something from my current and cycled 55g. What do I need to do? Take used filter media and place it in the filter to the 130? Take some gravel and put it in the 130? Take 50% of the 55's water and place it in the 130g?

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post #2 of 7 Old 07-13-2009, 11:26 PM Thread Starter
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Center Brace for glass 130g?

Posted this twice in the same thread for some reason. Edited. Thanks. :)
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post #3 of 7 Old 07-14-2009, 06:21 AM
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Hello Nick

I think you need to find out about your tank and repair the center brace before any water is added.........Maybe im just being paranoid, but i always lean on the side of caution when it comes to used tanks, most of the time their is never any issues, but without a center brace your taking a huge risk of a major issue..I responded to another post you have here explaining my reasoning

Your steps on jumpstarting your cycle in the new tank is correct thinking, except the water part............Transferring the water will not do anything for the cycling of the tank, but the filter media and gravel will help cycle your tank more quickly, but its not foolproof...............still do the water testing and give it a week or 2 to stablelize before adding any delicate fish...........Good luck!
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post #4 of 7 Old 07-14-2009, 06:29 AM
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I agree, center support is important to integrity of the tank. You might consider making a support from a sturdy piece of plastic cut to fit the opening and then use glue gun or small torch to heat the plastic so that it bonds with both sides. Use clamps to hold it in place during the process and for 24 hours afterwards. Of course if you can find plastic rim with center support for the tank ,that would be better.
Just realized that there is possibilty ,or perhaps probability, that the center support is,was,,glass in which case you could have piece of glass cut to fit and then silicone it in place. Would still require clamps to hold it secure until cured.

The most important medication in your fish medicine cabinet is.. Clean water.

Last edited by 1077; 07-14-2009 at 06:32 AM.
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post #5 of 7 Old 07-14-2009, 09:30 AM Thread Starter
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Okay, back on topic though, since I already made a another thread concerning the brace, what advice is there for jumpstarting the tank?


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post #6 of 7 Old 07-14-2009, 09:34 AM
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Plan you have sounds good. Wouldn't use the water from the other tank due to next to no beneficial bacteria being found there.Filter material will hold the lions share of the bacteria your wanting .Were it me,(and it ain't) I would get the larger tank set up and allow it to run for a day or two to check that everything works heater,filter,no leaks, and then simply move the filter from the small tank to the large tank along with the fish. leave both filters on the tank for ???

The most important medication in your fish medicine cabinet is.. Clean water.

Last edited by 1077; 07-14-2009 at 09:37 AM.
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post #7 of 7 Old 07-14-2009, 10:22 AM
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I don't know how many fish are in the 55g tank but I would certainly not transfer all of them at once. Moving the filter media from the 55g to the 130g will provide a bacteria population for the 130g but only what is in the filter media. Most of the nitrosomonas and nitrospira bacteria in an aquarium reside on surfaces within the tank (substrate, walls, plants, wood, rocks). The bacteria population in the tank is at the level of the fish in the tank, i.e., sufficient to handle the regular ammonia and nitrite levels produced by the fish. When you move the fish to the new tank, the bacteria in the new tank will only be at the level currently in the filter media you transfer and this will not be adequate for the ammonia and nitrite produced if all the fish are moved over at once.

One suggestion would be to move the filter media and some of the fish, leaving some in the 55g; new media in that filter will have no more effect on the fish left than the media transferred to the new tank, since the bacteria in the 55g will still be there. Under optimum conditions, nitrosomonas bacteria can multiply (divide by binary division) every 7 hours and nitrospira every 11 hours, although more realistically it is probably closer to 20-24 hours. All species of the nitrobactyeraceae have limited tolerance ranges and are very sensitive to pH, dissolved oxygen levels, salt, temperature and chemicals. Assuming the water parameters between the two tanks may be different in one or more of these aspects, some of the bacteria may die when transferred.

There is no shortcut to nature's methods. And ensuring the best health of our fish is our first priority.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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