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Re: Filter Capacity ( Flow rates)

If your Power head or pump is rated at twice the capacity of your aquarium
an aquarium of 30 gal volume and power head of 60gal/Hr. capacity and this
power head passes the aquarium water through a device, assume a UV
stabiliser, that does not progressively get dirty unlike a filter for

Then in order to have 99.99% of your aquarium water pass through the device
it takes 4.6 hours.

In case of a power head pumping through a filter which progressively gets
dirty with time the time taken for 99.99% of the aquarium water to pass
through the filter is 6.375 hours as the flow rate decreases with respect to

The more you know the more complicated it gets !!!!!.

Madan Subramanian
Bangalore, India.