Would it be crazy to cycle with water from classroom tank? (Cycling New 14 Gal) - Tropical Fish Keeping - Aquarium fish care and resources
LinkBack Thread Tools
post #1 of 39 Old 12-29-2010, 12:20 PM Thread Starter
New Member
Exclamation Would it be crazy to cycle with water from classroom tank? (Cycling New 14 Gal)

Link to origina lthread with all information: http://www.tropicalfishkeeping.com/f...k-owner-58377/

Everyone has been so helpful so far with advice on the new 14 gal. tank I have @ home... But the more I learn about cycling a new tank, the more I've been wondering... Would it make sense to take water from my 2.5 gal tank in my classroom and bring it home and begin a new cycle in the home tank?? I have had a zebra danio in there for 18+ mos. with zero problems... he is healthy and active. We are taking back the Pleco and the Giant Danio later this afternoon... I'm going to have Petco test water samples from both tanks while I'm there... if everything looks okay, would it be safe to bring my zebra danio home tomorrow and use his water in the new tank to get the cycle going? I'll be home to monitor the tank levels, etc. from tomorrow night until Monday morning...

I'm not sure if this is the right idea... I *think* I'm beginning to understand the whole cycling thing and I've read that other people moving fish to larger tanks are doing similar things to bring the beneficial bacteria etc. to the new tank... Would it also make sense to pop the little old filter in the new tank for a few days?

The tank & equipment at work are mine, so obv. none of this would be an issue if it is, in fact a good idea... Please correct me if I'm way off track here... I might have the completely wrong idea about how cycling works!

Thanks again!
Jessibel is offline  
Sponsored Links
post #2 of 39 Old 12-29-2010, 01:13 PM
I would use some of the gravel or filter media rather than the water from the established tank.
spike0544 is offline  
post #3 of 39 Old 12-29-2010, 01:26 PM
redchigh's Avatar
Or just run the old filter in the new tank for a week or two. That would work well.

Originally Posted by Christople View Post
^^ genius

Soil Substrates Guide:
Part 1
--------- Part 2

redchigh is offline  
post #4 of 39 Old 12-29-2010, 01:40 PM
jeaninel's Avatar
You're not way off track...just slightly. The beneficial bacteria (BB) colonizes mainly in the filter and also on the hard surfaces in the aquarium. There's very little, if any, BB in the water itself so using the old water won't do any good. But using the old filter media along with a handful or two of gravel placed in a nylon stocking or just moving over your established filter from your little tank would really help to jump start your cycle on the new tank. If you're going to take down your 2.5 gallon, just move over the whole filter and run it alongside the filter in your 14 gallon. If you want to leave your 2.5 gallon running, take a bit of the filter media (if there is enough to share) and some of the gravel for the 14 gallon. Be sure to watch the parameters on your 2.5 gallon tank after you do this just to make sure you don't through it into a mini cycle. But with only one fish in it I think you'll be ok.

150 Gallon - Mostly American Cichlids
135 Gallon - Angelfish Community
75 Gallon - Odd couple (Polleni/Angelfish)
55 Gallon - African tank
20 Gallon Long - QT
10 Gallon - Empty
jeaninel is offline  
post #5 of 39 Old 12-29-2010, 03:20 PM
New Member
RTBS's Avatar
i agree with a few replies... filter media is easiest way to go...
RTBS is offline  
post #6 of 39 Old 12-29-2010, 03:23 PM Thread Starter
New Member
I came home from work to find the little GloFish stuck in the filter intake... still breathing and thrashing a little... Shut down filter and he was able to swim out but only made it for a few more minutes. My 5-year old is devastated.

So here's the plan. We are returning the Pleco and the Giant Danio right now... Will also have water from both tanks tested. Tomorrow I will bring home the small tank and transfer some gravel and the small filter as well as the Zebra danio into the larger tank... So there will only be the Zebra Danio and the Diamond Tetra in the tank... Does this sound like a good plan?
Jessibel is offline  
post #7 of 39 Old 12-29-2010, 04:14 PM
cbirk's Avatar
It can help to use some gravel from that tank rather than the water, as the bacteria you want live there. However it is only balanced to handle the bio load of the one fish you have in the 2.5, so it will still be important for you to only add a couple of fish at a time so that more bacteria can grow to handle the increased waste.

  • 55 Gal x2, 30 Gal, 20 Gal, 20 Long, 10 Gal x 3, 2.5 Gal, 1 Gal
  • 4 Beta's, 3 Pleco's, 4 Convicts, 4 Fire Belly Toads, 4 Serpe Tetras, 3 Angel Fish, 5 Tiger Barbs, 2 Rosey Barbs, 2 Cherry Barbs, 2 Odessa Barbs, 2 YoYo Loaches, 3 Ottos, 2 Yellow Labs, 2 Snails, 1 Black Tiger Barb, 1 Pictus Cat, 1 Balla Shark, 1 Rainbow Shark, 1 Ghost Shrimp, 1 Oscar, 2 Chinease Algea Eater,2 Tadpoles
  • 4 Ferrets,3 Gerbils, 2 Cats, 1 Dog
  • 1 Child, 1 Girlfriend
cbirk is offline  
The Following User Says Thank You to cbirk For This Useful Post:
Jessibel (12-29-2010)
post #8 of 39 Old 12-29-2010, 06:34 PM Thread Starter
New Member
Thumbs up

Originally Posted by cbirk View Post
However it is only balanced to handle the bio load of the one fish you have in the 2.5, so it will still be important for you to only add a couple of fish at a time so that more bacteria can grow to handle the increased waste.

Thank you all for the very helpful information! When I went back to Petco and explained the dilemma, the fishguy first tried to argue with me that the pleco & danio were perfectly suited to a 14 gallon tank. I finally cut him off with "Listen, I'd rather return them now and possibly come back for new ones and add them to my tank when it is stable, than run the risk of killing them. Take them out of this bowl and put them back in your tank, please." He stopped arguing at that point.

He tested the water from both tanks (alas, with a strip) and said the levels were fine in both.

Tomorrow I will bring home my 2.5 gal. and transfer Zippy (Zebra Danio) into the home tank, along with his little filter and some gravel. He and Shimmer (the Diamond Tetra) will be roomies until the tank is stable enough to add more fish. How long approximately do you think that will take?

I ordered the API Master Test Kit and it will hopefully arrive quickly. I also asked one of the pre-school parents who raises Ciclids and she was happy to share with me the name & location of a nearby LFS.

Thanks again Everyone! Any more I should know?
Jessibel is offline  
post #9 of 39 Old 12-30-2010, 12:31 AM
mjbn's Avatar
Well here's the thing.. Danios are very strong, hardy fish. You can keep him in the tank while it's cycling because they CAN withstand the process. It is actually very common for people to use a small school of danios or minnows as "cycling" fish becuase tehy are KNOWN for being able to live through the process. And it is also good because that way, your tank will keep getting the needed ammonia to help grow the bacteria to stabilize your tank. Hope this helps. I have experience using white cloud mountain minnows as "cycling fish", and they are just as strong as danios. Give it a try.
mjbn is offline  
post #10 of 39 Old 12-30-2010, 04:28 AM
not to be rude but just because they CAN doesnt mean they WILL or SHOULD.i think cycling with a fish is pretty cruel.

To all who wonder: I can spell, I just am still getting used to using my new iPod touch and my fingers still need to figure out where the keys are.
james7139 is offline  

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
salt water tank cycle info cooldude2010 Beginner Saltwater Aquariums 6 05-29-2010 10:28 AM
Cloudy water - cycling tank DanMarion Beginner Freshwater Aquarium 12 04-16-2010 04:54 PM
If I do a 50% water change, will my tank re-cycle? tyler12345 Beginner Freshwater Aquarium 13 04-13-2008 05:15 AM
Water changes in a cycling tank. jamieson Beginner Freshwater Aquarium 2 03-03-2008 09:02 AM
Classroom Fish Tank somethingsfishy Freshwater and Tropical Fish 7 10-10-2007 11:48 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome