Have same system. The EC 60/65: Yes, the backflow is worn out
in tha t length of time. Fingers will be opening up soon too,
but it sounds like the backflow: It's only a piece of rubber
flap.

Recommend replace whole filter, but if you think it'll last, you
could replace the flap cheaply enough. Look at the plunger, the
piece all the fingers are fit into; it may be developing cracks
by now too.

HTH

Pop

"Dave Schwartz" wrote in message
...
:I have a 25,000 in ground with a Hayward EC65 diatomaceous earth
filter. I
: have been in my house for 13 years. The filter has been here
all along and
: has always been very good. This year, I am getting a lot of
earth going
: into my pool. There are large clumps of earth in the deep end
mainly, not
: much, if any in the shallow. I had someone come over to look
at it, and he
: thought that the earth was entering the pool through the
returns and it was
: due to the age of the filter and that I should get a new
filter. Maybe this
: is true, but I am 98% sure the earth is getting in through the
skimmer. The
: largest clumps on the floor are near the skimmer. I have only
one skimmer
: and 2 returns. The return in the deep end is opposite the
skimmer. It is
: not impossible that the earth is coming out of the return and
shooting
: across the pool and landing under the skimmer, but I really
don't think so.
: The shallow end, which has the other return, has very little,
if any earth
: on it. I figure, if the earth is entering the pool through the
returns, it
: should be under that one too, which it is not. Also, I have
seen the earth
: rise up out of the skimmer and enter the pool. So, let's
assume I'm right.
: Why would that happen after so many years? Is it normal for
the water to
: reverse a little at night and bring the earth with it? My
filter is
: supposed to have a check valve. Wouldn't that prevent this
from happening
: if it was working properly? Could it be that?
: Thank you for your time, and if anyone can give me suggestions,
it would be
: appreciated.
:
: --
: Dave Schwartz
: Commack, NY
:
: