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Re: Booth heating cables
>> The only explanation that makes sense is 12-18mts is the length
>> of time it takes an "almost optimum" aquarium to build up serious
>> alleopathic compounds that will inhibit plant's growth. What do you think?
>I don't think I would agree. We spent lots of time vacuuming gravel and
>moving plants around so I would discount alleochemicals.
>My preferred hypothesis is that the substrate supplies some/most of the
>nutrients that plants need, especially/maybe trace elements (iron, etc). If
>there is no mechanism to replace the nutrients that plants use, the
>becomes relatively infertile. It will still support some growth so the
>don't die. But the Liebig Minimum Law comes into play - the plants can't get
>enough of all the nitrients they need (or perhaps only a single specific
>nutrient that is best supplied by the substrate) and that shortfall
>limiting growth factor no matter how much light and CO2 and what all you
Therefore, substrate fertilization in your opinion should do the trick
(provided the nutrients are complete)?
Do soil substrates work as well as gravel w/ heating cables?
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