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Old 11-09-2012, 08:37 PM   #2
Darkblade48
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HOB filters are fine, depending on what you are doing.

For example, if you are injecting CO2, you will want to minimize the amount of surface disruption there is, so a HOB filter may not be the best choice (the filter return waterfall creates quite a bit of surface disruption).

In addition, the biowheel adds more surface area, allowing CO2 to off gas faster.

Of course, this is not really a problem if you are not planning to inject CO2.
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