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[APD] Re: theory behind algae control

On Tue, 27 Apr 2004 06:49:15 -0600, Roger Miller <roger at spinn_net> wrote:

Roeland wrote:

But to come back to the original question: the idea would be, like Roger
Miller says, to select a window of conditions. Unther those conditions
plants are better competitors than algae.

To be perfectly clear about this, I don't think that competition -- particularly for nutrients -- has any impact on algae control.

As you pointed out, our common nutrient levels are so high as to make
competition irrelevant. It is common for aquarium water to have CO2
concentrations, phosphate concentrations and sometimes potassium
concentrations 2 or 3 orders of magnitude higher than normal for natural
water. We usually maintain all other nutrients at comfortably high levels.
There is no possibility of competition when the table is so lavishly set.

What about NH4? Does anybody have measurements of NH4 levels in aquaria?

Andrew McLeod
thefish at theabyssalplain_freeserve.co.uk

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