Metal in the water (Fiberglass 35K pool)

[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.

[blk133]

Hello everybody! Today is a day 6 after I added Ascorbic Powder.
Backwashed my filter yesterday and added 7lbs of DE.
Droped 3 bottles of 96 oz. Chlorine yesterday and today my Chlorine is at .5 again. The water is a little clearer and I can see bottom drain better than before.

Can't keep it up yet (Chlorine). I added 2 more bottles today and left to work. I'll add 2 more at around 5 PM.

PH keeps going up instead of going down. Today it is higher than 7.2 but lower than 7.5. I don't know what is going on with it. Could it be because my return eyeballs facing up? Arriation? Or because we had rain for 3 days non-stop.

What do you guys think?

Thanks,
B

[mbar]

Yes, you probably are aerating the pool - better check your alkalinity - it may be low. If it is add baking soda, and if the ph goes any higher than 7.4 make sure you add acid to bring it back down. If your ph gets high, make sure your chlorine is on the low end of your cya chart. Remember high ph with high chlorine lets metals precipitate out, so keep your eye on the pool, if you start to see stains take your ph back down to 7 and add more sequestering agent. Since you have a DE filter, you can add a trichlor puck to your skimmer basket.

[blk133]

Today the water looked crystal clear, for some reason all of my CYA is gone. Added 6 lbs.

Stains--- Some stains are still there, droped Vitamin C and it desappears. Maybe I should drop more Ascorbic Acid? Maybe not enough Sequestaring Agent? 4 bottles? 35K pool I thought should be enough.

What do you think? I don't want to get cloudy water again.

Thanks,
B

[mbar]

Were all of the stains gone first, and coming back now - or were they never lifted off in the first place. If the stains just came back, drop your ph back to 7 and add more sequestering agent. If the stains never came off in the first place, add more ascorbic acid and let the pump circulate for a while. Your water shouldn't get very cloudy again, maybe just a little. You don't need to take you chlorine down again, but watch it because the ascorbic acid will use up the chlorine fast. I am surprised about the cya, did you lose any water?