Dosing in a soil substrate tank.... - The Planted Tank Forum
 
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post #1 of 2 (permalink) Old 06-21-2011, 08:43 PM Thread Starter
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Dosing in a soil substrate tank....

OK... here is my first question. A little back ground.

I have a 30 gallon aquarium with what I call a layered soil substrate. Sub layer is 1" of this mix:

7 parts clean topsoil
1 part peat moss
1 part calcified clay (Turface)
1 part red flint gravel

That is capped with 1" of s#30 red flint gravel.

The tank is primarily planted with root feeders: Echinodoras, Cryptocoryne and Aponogeton. There is a bit of Rotala indica and a good growth of Valisnaria grass as well.

Light is two 36" HOT5 bulbs... one 10,000K (this is a photo tank and I need the spectrum) and one 6500K. No CO2 supplementation. Plants are doing very well, though I would like to see the Echinodoras increase their height. (kleiner bar and Amazon swords). Right now that are staying at about 9" tall.

Question: Should the dosing of nutrients be different for a soil tank, considering the nutrient-rich substrate that the roots of the plants are in?
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post #2 of 2 (permalink) Old 06-21-2011, 09:11 PM
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They do not NEED to be any different, I dose the same reagardless.
No one gets algae if they over dose or any negative responses.

That said, you can likely dose less or if you forget often times.........or or.....these sorts of things since you have a back up for ferts in the soil.

Dosing the water column will allow the soil to last longer and not run out later, mostly N is the one thing that is removed from soils. The rest of the nutrient should last quite a long time.




Regards,
Tom Barr
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