wet/dry skimming

missionsix · Jan 6, 2009

Beamerhack said: ↑

I think the Wet/Dry term is thrown around like a Lingo rather than an actual way of "Skimming"
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On the contrary, there is a method to the madness......;D

Foam draining is a critical stage for most skimmers. One problem with drainage is that some organics are washed away with the draining water. There is always an equilibrium between organics in solution, and those actually attached to the interface. As water continues to drain, some of the organics are lost. Further, as some bubbles pop and their organics are redistributed into the nearby water, the local concentration of organics in the water between the bubbles in the foam can rise to concentrations far higher than are present in the aquarium. For this reason, the most effective skimming, in terms of total organic removal, comes from removing somewhat wet foam, rather than waiting for this same wet foam to drain prior to removal. The primary difference between wet foam, and drained dry foam, is that additional water and some organics have drained away. A dry form is more efficient in terms of the amount of organic removed in relation to the water volume, and all skimmers and their potential adjustments strike some balance between removing more water and slightly more organics, or less water and slightly fewer organics. Perhaps a careful analysis of different types of skimming will, in the future, show this expected result experimentally.
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What is Skimming? by Randy Holmes-Farley - Reefkeeping.com

Beamerhack · Jan 6, 2009

missionsix said: ↑

On the contrary, there is a method to the madness......;D

What is Skimming? by Randy Holmes-Farley - Reefkeeping.com
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He des not say anywhere in the section on Wet/Dry. How to set your skimmer..

Agian it is an art, There is no defenition on what excactly is "Dry vrs Wet". Merely that you want to find where you can pull the most DOC's from your water.

Its like saying 1 ton of feathers weighs more than 1 ton of bricks, Its still a ton. You are still skimming either way just not as efficient.

He explains that the "Dryer" your skim the more DOC you will have. There is not black and white answer though.

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wet/dry skimming

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Beamerhack Coral Banded Shrimp

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wet/dry skimming

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Beamerhack Coral Banded Shrimp

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