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post #1 of 5 Old 06-04-2011, 01:25 AM Thread Starter
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self sustaining tank?

has any one here ever done a self sustaining tank with bigger tanks? what about any of you who live in colder climates such as myself?
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post #2 of 5 Old 06-04-2011, 04:36 AM
You can make a low maintenance tank using something like the walstad method, no tank can be completely self sustaining though.

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post #3 of 5 Old 06-04-2011, 02:07 PM
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Originally Posted by Mikaila31 View Post
You can make a low maintenance tank using something like the walstad method, no tank can be completely self sustaining though.
correct. even if you could have a complete cycle which led you to 0 nitrates water changes would have to replenish nutrients that benefit your plants to help them grow in the first place.
a similar result to this occurs in my saltwater tank, which from properly setting up, stocking, feeding and so forth with my tank i do acheive a 0 nitrate reading however water changes and dosing for alk, cal, and mag are still required to replenish the nutrients used by my system.
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post #4 of 5 Old 06-04-2011, 02:15 PM
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In a Walstad tank, and the substrate colonised by blackworms, seeded by cyclops, and lightly stocked (a handful of mosquito fish in a 75G for example) with lots of plants, you could theoretically get maintenance down to once every 6 months, and feeding whenever you feel like it. Of course, you'll have to break down the tank and start over once a year, since the substrate will get depleted quickly.

Hopefully Byron will stop in, since he lives in canada as well and is our resident plant and fish guru..
Not sure why cold climates would matter, since we tend to buy things called "heaters" that keep the water close to 78 degrees F or so...

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post #5 of 5 Old 06-05-2011, 02:35 AM Thread Starter
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but won't that melt our igloo's?
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