Metal in the water (Fiberglass 35K pool)

[blk133]

Don't have polyquat yet. Pool still looks like milk. Pump's pressure is at 35 (normal 22) don't know if I should let it run overnight.

Added a bottle of chlorine 96oz and after about two hours added one more.


What do you guys think? Should I let it run overnight? Pump has been running for about 54 hours.

Thanks,
B

[mbar]

I don't know anything about DE filters, I have a sand one. It won't hurt to let it off for the night, but it would probably be better if you keep the water moving and filtering.

[blk133]

Left it to run overnight. 9 AM water still looks like milk. Checked Chlorine level and it was at .5 so I added another bottle 96 oz of bleach. PH is at 7.2.

How come PH is staying at 7.2 and doesn't go down at all? I thought that it would go way down.

Should I try to backwash my filter? Pressure was at 35 this morning.

Thanks,
B.

[mbar]

You will use up chlorine fast, because the chlorine is attacking the ascorbic acid. I don't know why your ph hasn't gotten any lower than that, mine always did - are you sure your ph test is ok? I also know that all pool water reacts differently sometimes, so as long as your ph is ok, just keep adding bleach and filtering. You can bump your filter, and backwash as needed now - I'm sorry I don't know anything about DE filters.

[DavidD]

B,

If it were me, I'd go ahead and backwash now as Marie suggests. Get the pool clear by keeping the chlorine up and then consider backwashing it once again before you bring the chlorine up to "shock" levels. My reasoning for this is the "milky" water. I'm thinking the milky substance will all eventually get caught in the DE and you don't want it hanging around in there to only precipitate back out after you shock. Backwashing again is a must if you use the floc.

Dave

[blk133]

I did not backwashed a filter yet. Water is a little bit less milky. Today, after 4 days I was able to see the bottom drain, not very clear though. Chlorine level is .5-1 most of the time. Adding 1-2 bottles daily of 96 oz. 6% chlorine.

When can I try to bring it to 5 ppm? Can I do it by putting it all in to the pool at once? Or I still have to slowly add chlorine.

PH is at 7.2 still.
CYA is at 25-30

Don't know if the stains are all gone since I can't see the bottom clearly.
Don't want to add floc yet.

Thanks,
B.

[mbar]

You can start to bring the chlorine up to 5. You can keep adding it to go up by adding enough to go up 1 to 2 ppms at a time. You just want to watch to see if any stains start to appear - if they do then add more sequesterant. Keep your ph no higher than 7.2 till all the cloudiness goes away. I would backwash the filter now.