Water changes in low tech tank with aquasoil? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 08-15-2015, 11:51 AM Thread Starter
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Water changes in low tech tank with aquasoil?

Hi all,

Im starting a low tech, 7.5 gallon bowl with aquasoil. (Low tech: low light, no co2, no water column dosing but with big canister filter and a rich substrate)

I know that changing water makes the co2 levels fluctuate so you want to keep that to a minumum with this kind of tank..
but i also keep reading about the ammonia aquasoil releases in the beginning and the way to get rid of it is to do large water changes for the first couple of weeks (and plant heavy)

Now i'm stuck.
Should i ignore the possible co2 problems and help get rid of the ammonia by doing 50% waterchanges or should i just wait it out and do nothing, or maybe smaller changes? questions questions!


I have also not decided if i want to put a layer of clay (laterite or loam, don't know the differences yet) underneath the aquasoil or go with root tabs for the crypts, Helianthemum tennelum & Saggitaria subulata, all heavy root feeders.

Any advice welcome
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post #2 of 6 (permalink) Old 08-15-2015, 12:46 PM
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Water changes are your best friend, your fish will love them your plan to love them its a win win. the co2 that comes in with new fresh top water is not going to be the thing that throws you off balance and causes allergy problems or anything else for that matter. the one and only problem with water changes are if the water contains a lot of dissolved gases and when you do the water change your tank looks like a 7up bottle.

75 Gallon Low Tech w/ Green Terror Pair
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post #3 of 6 (permalink) Old 08-15-2015, 03:38 PM
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If there are no fish in the tank, and there shouldn't be for the first few weeks with Aquasoil, you don't absolutely have to change water often. The newest version of Aquasoil Amazonia is supposed to leach a lot less ammonia too, so if that is what you have, with no fish, I would just leave the water alone for a couple of weeks before doing a 50% water change.

Hoppy
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post #4 of 6 (permalink) Old 08-15-2015, 04:34 PM Thread Starter
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Quote:
Originally Posted by Hoppy View Post
If there are no fish in the tank, and there shouldn't be for the first few weeks with Aquasoil, you don't absolutely have to change water often. The newest version of Aquasoil Amazonia is supposed to leach a lot less ammonia too, so if that is what you have, with no fish, I would just leave the water alone for a couple of weeks before doing a 50% water change.
Thank you Hoppy, its a fishless cycle indeed.

OK that's sounds like a plan. I'm gonna plant heavily from the start, and add some fast growing stems and floaters to help keep algea at bay.

Still undicided on the possible clay layer under the amazonia. Looked at various root tabs as well.

Can anybody point me to a good article or just give me their experience with keeping heavy root feeders happy?

Last edited by Jonas; 08-15-2015 at 05:32 PM. Reason: spelling
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post #5 of 6 (permalink) Old 08-16-2015, 03:33 AM
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https://www.plantedtank.net/forums/sh...y+root+feeders shows an experiment that demonstrates that "heavy root feeders" don't have to have substrate fertilizing, even though some of them do grow a little better if you do have both the substrate and the water fertilized.

Hoppy
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post #6 of 6 (permalink) Old 08-25-2015, 01:37 PM Thread Starter
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Thank you, very interesting test.

Im just gonna put some root tabs at the base of the crypts, no extravagant clay layers
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ada, ammonia cycling, aquasoil, cycle, laterite

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