Iron in water source

[BigDave]

I'm concerned that the filter is not working properly. As FormerBromineUser suggests, you can add DE to a sand filter to get it to catch smaller particles. You can test the filter with some DE as described in this link: http://pool9.net/de-test/. please do as it sounds like your filter is not working correctly.

[stcohen]

I will get the DE and try it. I've been concerned that the filter is not working correctly also. As I mentioned I had the sand replaced when I had to replace the liner. Was something done wrong or any idea what it could be? Right now have towels is both baskets. Catching lots of mineral. Rinsing and repeating. Probably just entertaining myself as it would probably take a month of Sundays. Was hoping the reduced flow would allow sand to begin to catch something. Flow still strong however. Please understand my frustration is with my pool, I appreciate all the time you, FormerBromideUser and PoolDoc have given this. I've had a pool 15+ years and never had to deal with a metal problem before. Wow!!!

[stcohen]

2/3 cup DE increased pressure 1 - 2 psi
pH 7.2, FC 5
Metal in solution, water opaque green.
Still doing 1 cup polyquat every other day.
Guess it's time to begin the cal-hypo again?

[BigDave]

Forgive me for asking, but, why 1 C polyquat every other day? FC of 5 for CYA 50 should be fine for algae control.
How did the pH get from 8.0 to 7.2? If you used MA, did you backwash first? How did backwash look?
CC 0.0?
Completely opaque or cloudy? Are orange particles gone?
Is DE still in filter?

[stcohen]

Wondered myself but adding polyquat per PoolDoc's origin post to me.
pH was 8.
Backwashed, mostly milky white. Got baseline pressure.
Added DE 1/3 at a time. Total 2/3 cup raised psi 1-2
Used MA to lower pH
Very cloudy, not quite opaque. No particles.
DE is in system, added after backwash.

[FormerBromineUser]

.
CC reading?
.
While BigDave is thinking, make a mental note about DE. It should work well for you in removing iron. It also is very good on an on-going basis to filter out smaller particles in sand filters. You just have to remember to add 2/3C after each backwash.

[stcohen]

Will do.
After 2 days and 2+ inches of rain I thought I better test all with 2006c kit.
Currently:
pH 7.2
FC 1.0
CC 0.4
TA 50
Ca hardness 160

[JimK]

Forgive me for asking, but, why 1 C polyquat every other day? FC of 5 for CYA 50 should be fine for algae control.
How did the pH get from 8.0 to 7.2? If you used MA, did you backwash first? How did backwash look?
CC 0.0?
Completely opaque or cloudy? Are orange particles gone?
Is DE still in filter?

I've read posts by Ben that said polyquat also acts as a clarifier, so my guess is that's it's purpose here.

[FormerBromineUser]

.
While waiting for an answer from someone more knowledgable than me, get some cal-hypo in there pronto!!!!
FC is WAY too low at 1.0.
Keep an eye on your filter pressure.

[stcohen]

OK, just added 1 cal hypo to each skimmer. Will watch pressure. Do not plan to backwash until pressure increases.