"Evan" wrote in message
...
On Jul 18, 10:26 am, "Don Phillipson" wrote:
Our well water has high levels of calcium and some
rust. So, while the pool is clean and chemically
stabilized, still water overnight reveals next morning
ultra-fine yellowish powder on the bottom. It is so fine it
goes straight through the sand filter and back into
the pool, making the water cloudy and greenish.
Is there any cure for this, perhaps by causing the
dust to agglomerate so that the sand filter holds it?
--
Don Phillipson
Carlsbad Springs
(Ottawa, Canada)


Your problem is not a pool filtering problem... It is a water
chemistry issue...

If you put crappy water into your pool, it can have all sorts of fun
chemical
reactions with the chemicals in your pool...

Your particular situation is resulting in a fine rusty precipitate
settling out
of the water...

Solve the problem where it is, namely the water source, rather than
the
visible symptom by trying to filter the problem out of the pool water
after
it is already in the pool...

Sounds like a water softener and reverse osmosis water filtration
setup
to filter out the fine dissolved solids from your well water would do
you
more than trying to filter crap out of the pool after it is causing
problems...

Do you have problems in the house, specifically in the dishwasher and
washing machine ?

~~ Evan

I've read all the responses for filtering the water first but it seems to me
he puts in the initial amount of water, say 35,000 gal, and adds maybe a
1000 to 2000 every 1 to 2 weeks if there isn't much rain. So he's really
only using floc with the vast majority of water one time. With a touch up
every 4 to 6 months. Which wouldn't hurt anyway to keep other particulates
out. From personal experience floc is the cheaper way to go. He wouldn't
want to use RO water because with some RO system you burn 4 gallons for
every gallon of filtered water. Even if he could find one that was 1 gal for
every gallon I'd think it was a huge waste of water. Just my opinion. g

Jim