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Posted by Dan Espen on October 15, 2007, 9:54 am
hdivr@earthlink.net writes:
>>
>>
>>
>>
>> >I have an above groundpool(24' round) with aPolaris65 cleaner.
>> >Poollooks great and water is crystal clear. However, every time I
>> > "unhook" thepolarisfrom thepoolwall outlet, there come a great
>> > "brown" cloud. This has been doing this all summer.
>>
>> > I have a sand filter and thought it may be broken internally, but it
>> > is only 1 year old and does filter thepoolcorrectly. I have tried
>> > backwashing for 5 minutes past clear and then rinsing 5 minutes past
>> > clear. It doesn't seem to make a difference. Once backwashing and
>> > rinsing are done, I unhook thepolarisand bingo....here comes the
>> > cloud.
>>
>> > I even added DE powder to my sand filter to see if it was just missing
>> > some "algae". No help. Looks like the same amount to me.
>>
>> > It seems that thepolarisis somehow creating a stagnant water area in
>> > the top of my filter valving and it doesn't shoot out even though the
>> >polarisseems to be running strong. What would cause the brown cloud
>> > to not come through thepolaris. It only comes out when unhooked. It
>> > is just annoying to have a "sparkling"pooland then see a huge cloud
>> > shot into the center of it.
>>
>> Could you just disconnect the thing while you are filtering to waste. It
sounds
>> like the cleaner is restricting the water flow.
>>
>> Bob
>
> Just took the filter apart and dumped the sand. The Sand was only 2
> years old and seems to still have a lot of sharp edges. However, I
> did notice alot of greenish "clumps" of what I expect to be body oils
> or algae. It has a pasty consistency and had some brush bristles in
> them. Is it normal for these clumps to be there after only 2 years
> (about 7 months total use here in Missouri). Or is this a sign that
> my pump/filter is under or oversized since not being able to backwash
> these out? thanks for all the help.
Those clumps are normal and you will see them after one year.
I think they are oils as you suggest. They collect at the top and
ideally will get backflushed but as you see some remain.
I usually open the filter in the spring, let the sand dry and scoop
them out. I don't think they do any harm if you leave them.
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