Crystal clear water, but no FCL

[wkuengineer]

Thanks for all the help. FC Measured 0 again. Just dumped 8 182 ounce Jugs in the pool. Will be checking d level in about 30 minutes.

 

[Smykowski]

Weird that you've got that kind of consumption with no CCs. Must be algae, even if you can't see it. Keep that level above shock.

 

[wkuengineer]

Thanks for all the help. FC Measured 0 again. Just dumped 8 182 ounce Jugs in the pool. Will be checking d level in about 30 minutes.

Brought to shock level around 630. Level measured 20 ppm. Color never turned clear but light brown.( All most clear)

 

[wkuengineer]

18ppm about 2to hrs later. Sample went to light brown (still see through) again. What's this mean?

 

[wkuengineer]

20 ppm (last reading was actually 19 or a 19.5.) At 3the hrs. Sample to elbow deep in deep end. Will check all levels again in morning.

 

[wkuengineer]

Check the levels again this morning. Free chlorine around 19 or 20ppm still. Water sample after testing was clear with still a light brown it in color. Off to work. Will check again when I get home

 

[Richard320]

Getting closer.....

 

[wkuengineer]

Getting closer.....

Is the brownish hint in the color significant?

 

[Richard320]

It's probably metals, because the pH will be way down with it finally holding FC. Bleach is low pH until it degrades.

But it's clear! I suspect once you get it all clean and balanced, the color will disappear.

 

[wkuengineer]

Thanks again for all the help. It's been pretty sunny here today. Any ideas on what to expect the FC to be when I check it this evening? Any way to estimate loss from sun?

 

[duraleigh]

2-4ppm is fairly common.

 

[wkuengineer]

Looks like its back to shocking again. Checked levels a few minutes ago and FC was at 1opm. CC .5 or less. Water crystal clear though!_

 

[wkuengineer]

Levels were still at shock level this morning after shocking last night. Why would I lose so much FC throughout the day?

 

[Bama Rambler]

A couple of things.

1. Did you actually measure the FC & CC last night, or did you assume by the amount of FC you added that it was 20 ppm?
2. Are you sure of your CYA level? Might be time to test it again.

 

[wkuengineer]

A couple of things.

1. Did you actually measure the FC & CC last night, or did you assume by the amount of FC you added that it was 20 ppm?
2. Are you sure of your CYA level? Might be time to test it again.

Yes, I measured the FC and CC. It was 20ppm FC with .5ppm CC or less. I will check my CYA levels again tonight.

 

[wkuengineer]

So here are my levels now

FC: 3.5ppm
CC: 0ppm
pH: 7.5
TA: 110 ppm
CYA: 40ppm

Water is crystal clear. Lost 0 ppm FC over night but almost 17 throughout the day today! Is this normal? Do I need to shock again?

 

[jblizzle]

Something seems off. That is a huge loss during the day for apparently no loss at night. Sure about the CYA right?

Bump the FC back up and then do the OCLT again to be sure.

Posted with Tapatalk ... sorry if I sound short ... hate typing on phone

 

[wkuengineer]

Thanks. I'm not use to the black dot tes but feel pretty good about it. If anything it might be lower but not much. Dot is absolutely not visible at 30ppm. Pretty sure it is not visible at 40. Would a low CYA cause this? Should I consider raising? I'll need to buy more bleach before I can bring back to shock level. This is very frustrating and depressing considering how clear my water is :? Just doesn't seem like anything should be wrong with water this clear. I'll try and post a pic tomorrow

Should mention that I haven't backwashed in a few days. Vacuumed all day yesterday and last night with aquabot pool vac.

 

[wkuengineer]

Check levels again this morning. FC Was less than 1 ppm But was present. CYA is at least between 35 and 40. Everything else is the same.

 

[jblizzle]

Your FC should never be allowed to drop that low. Do the OCLT. I am guessing that something is growing and you need to go through the shocking process.

Posted with Tapatalk ... sorry if I sound short ... hate typing on phone