How a pond bio filter works continued from part 1

There is one other factor to consider and the coffee example used to illustrate this is number 3. In this case it took me longer to get the sugar to dissolve because I let the temperature drop before stirring in the sugar.

You can see therefore that other variables can also influence the rate of transfer and temperature is one of the most common.

Generally speaking higher temperatures speed up mass transfer processes.

Now Consider a Biofilter

The primary job of a biofilter is to convert ammonia (or ammonium) to nitrites and then to nitrates using specific bacteria types. In practical terms this requires that ammonia, which is dissolved in the circulating water, must make contact with bacteria at an interface and in conjunction with oxygen in such a way that a chemical reaction can take place.

Take a look at our "what's happening in a bio filter"

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Essential reading for anybody who wants or has a garden pond. Get 12 Excel pond calculators free as well as "Water Lilies and Pond Aquatics" ebook also free

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UV + Bio Pond Filter Selection Table ... By clicking the link below you can review a wide range of biofilters both with and without UV sterilizers.
Fish-Mate Includes UV Sterilizer (see below ... if you're looking for a low cost well tested UV + filter combo for a small to medium fish pond this would be my recommendation)
UV + Biofilter for ponds to 1,000 gallons	UV + Biofilter for ponds to 2,000 gallons	UV + Biofilter for ponds to 3,000 gallons
Combo UV + Biofilter for ponds to 4,000 gallons	UV + Biofilter for ponds to 5,000 gallons	UV + Biofilter for ponds to 6,000 gallons

Let me try hard to debunk this myth of Pond Filter size

Nitrification cycle koi gold fish ponds and pond filters

Pond Filters Biofiltration Pond Water Quality

Shape of a biofilter does not matter Make your own

Successful Fish Ponds Need A Filter & UVC (Ultra Violet Light)