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Posted by jack on June 28, 2008, 2:18 pm
>
>> At garage sales recently I bought a sand filter and a 20" narrow filter
>> housing (it takes two 10" narrow filters). The sand filter flushes
>> easily, and I have a lot of sand.
>>
>> If I pulled the 10" narrow 20 micron filter and replaced it with the 20"
>> narrow 20 micron filter and the sand filter would you expect my flow to
>> go up? I am figuring the sand filter shouldn't change much except to
>> keep the first filter cleaner, and the 20" should have less resistance
>> than the 10".
>>
>> It would involve a fair amount of work, but better flow would be nice.
>> And I sure don't want to do it and find the flow is worse for some reason
>> I failed to anticipate.
>
> I'd be more concerned about bacteria growing in the sand than filtration
> or flow. Is this a pool filter or is it certified for use with potable
> water? You may be adding a serious health risk.
>
Actually a sand filter is coarse prefilter that filters out the sand, of
which I have quite a bit. It is easily cleaned and should keep the first
filter from loading up on sand.
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