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Thread: It is green but circulating and...

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    It is green but circulating and...

    cant see much improvement in the day it has been running. I brought it to shock and have been running the pump for a day but not much improvement visually. Brushed the whole pool after the pump started and backwashed this morning since the flow had decreased. That got the flow going stronger again. How long should this take to begin to see some definitive clearing? Its a 27 foot round pool. Thanks Jim
    27 foot round above ground

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    Mod Squad Bama Rambler's Avatar
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    Re: It is green but circulating and...

    It can take a while to start seeing improvement.
    Are you following the shock process outlined in Pool School?
    Dave J. TFP Moderator
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    Re: It is green but circulating and...

    For best results, bring the FC to shock level and hold it there until you are finished.

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    Re: It is green but circulating and...

    I am following the procedure outlined in the sticky. I was just curious what I should expect in the way of a timeline. It looks pretty bad green but I may be seeing some improvement. Its hard to tell though at this point. I intend to keep it at shock level. The wife estimated the amount of chlorine needed to bring it to shock but it somehow went quite a bit higher than intended. Hope that is ok but from the looks of the water I dont think you could have too much in it. We didnt have this problem last year but had a different situation for cover that kept it much cleaner from debris.
    27 foot round above ground

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    Mod Squad Bama Rambler's Avatar
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    Re: It is green but circulating and...

    It's hard to give a timeline because there are too many variables to consider. It's not uncommon for it to take several days. You should start seeing improvement tomorrow though.
    Dave J. TFP Moderator
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    Re: It is green but circulating and...

    It took over 2 weeks to clear mine. So, be prepared for it to possibly take a long time.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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    Re: It is green but circulating and...

    Sorry to hear that RobbieH but at least it cleared. Hope mine doesnt take quite as long. Im going to keep after it. Thanks for the info.
    27 foot round above ground

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    dmanb2b's Avatar
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    Re: It is green but circulating and...

    Keep at it! If at all possibly check FC levels every two hours and bump FC a few ppm above shock level before going to bed. Consistency in ensuring FC levels are high enough vs CYA level and 24/7 filtering is what makes the process as short as possible. Good luck!
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

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    Re: It is green but circulating and...

    I just checked the FC again and it is still 25 the same as yesterday. Is that normal? I would think that it should be falling quite a bit.
    27 foot round above ground

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    Re: It is green but circulating and...

    What is the downside to adding a algecide to speed up the process or will it even speed up the process? Is it bad to use a flocking agent? I have read that it speeds up the process.
    27 foot round above ground

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    Re: It is green but circulating and...

    Neither will help you much. Don't waste your money. Can you give us test results for CYA? That would be VERY helpful.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Mod Squad Bama Rambler's Avatar
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    Re: It is green but circulating and...

    Algaecide won't help at all. As long as you keep it at shock level the filter is the limiting factor. Floc won't help at this stage either. It rarely helps at all, and then only at the very end of the shock process.

    I wouldn't do anything more than you're doing now. Just keep the FC up and clean the filter as needed.
    Dave J. TFP Moderator
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    Re: It is green but circulating and...

    We measured the CYA at 40. I have not tested the chlorine today as I am sick and not feeling up to it. There is no change in the looks of the pool as of yet though. My shock level should be less than what I have it at now(FC=25). Dont know how I got it that high but I guess the wife was off on some calculation. I suppose more chlorine than nessary is OK but it does not deem to be going down any at all. It is a sand filter which I know is not the best but it is what I have. The sand filter seems to only get a bit cloged up at the end of a 24 hour period and requires a backwash. Doesnt seem too effective in filtering these suspended particles out. I think it is passing many straight through. The sand is only 2 1/2 seasons old. Could it need replaced already?

    I cant see the bottom to vac it. Would it be smart to stop the filter an let the suspended particles settle and then vacuum them to waste?
    27 foot round above ground

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    Mod Squad Bama Rambler's Avatar
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    Re: It is green but circulating and...

    They might settle but it would be better just to let it run and vacuum blind. At least in the beginning.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Re: It is green but circulating and...

    Your sand or your filter is not the issue. I think you need to give it more time. Keep your chlorine up around 16ppm or so. Since you don't know how the chlorine got to 25ppm, I don't think you can accurately judge how much has been consumed.....it may have been quite a bit higher than you think.

    I think you just need to keep doing what you are doing (but measuring and dosing a bit more carefully) and give it some time. You should see SOME improvement each day.
    Dave S.
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    Re: It is green but circulating and...

    Quote Originally Posted by fishcrazy
    We measured the CYA at 40.
    How are you measuring the CYA - is this with Taylor kit or TFP kit?
    What is your source of Chlorine?

    Quote Originally Posted by fishcrazy
    I have not tested the chlorine today as I am sick and not feeling up to it.
    Very sorry to hear that. I hope you feel better soon.
    Quote Originally Posted by fishcrazy
    There is no change in the looks of the pool as of yet though. My shock level should be less than what I have it at now(FC=25). Dont know how I got it that high but I guess the wife was off on some calculation.
    How did she calculate this? Was she using Poolcalculator.com? If so maybe the volume estimate or the Percentage strength of the chlorine source was inaccurate.

    Quote Originally Posted by fishcrazy
    I suppose more chlorine than nessary is OK but it does not deem to be going down any at all.
    25 is quite a bit high. The max typically recommended is around 24ppm which is the Mustard Algae level. More typically the site recommends around 16ppm as you saw in the CYA/Chlorine chart in Pool School. How are you measuring the chlorine? Are you seeing any CC's?

    Quote Originally Posted by fishcrazy
    It is a sand filter which I know is not the best but it is what I have. The sand filter seems to only get a bit cloged up at the end of a 24 hour period and requires a backwash.
    Sand is fine. How high is the starting pressure vs. the pressure you end up with just before backwashing? And what does it go down to? How is the flow from the returns?

    Quote Originally Posted by fishcrazy
    Doesnt seem too effective in filtering these suspended particles out. I think it is passing many straight through. The sand is only 2 1/2 seasons old. Could it need replaced already?
    First - my impression from this site is that filtering is how you clear up suspended particles but it does little to help while the algae is still growing. What seems to be the case is that you filter because as the algae dies off the filtering will start helping to remove the particles and the algae won't be replicating and replacing them. Sand is actually easier to use because it is slow and doesn't get clogged quickly. Filter sand also doesn't seem to wear out. Sand filters do however sometimes need cleaning beyond the backwashing process. Read this topic for more details on how to clean your sand filter and get it running in top shape.

    Quote Originally Posted by fishcrazy
    I cant see the bottom to vac it. Would it be smart to stop the filter an let the suspended particles settle and then vacuum them to waste?
    Unless you suspect sharp objects that you worry could damage the liner as you vacuum I think it's fine. Do make sure you are using the skimmer basket or inline leaf cannister to catch things before they could clog your suction lines.
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    Re: It is green but circulating and...

    I got a TFT test kit. Just replenished the chemicals. I did retest the water. FC-18, CC=4, CYA=52 and ph=18. So something is happening now. Still looks the same though.
    27 foot round above ground

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    Re: It is green but circulating and...

    PH of 18 is impossible.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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    Re: It is green but circulating and...

    Sorry for the typo. PH is 8.
    27 foot round above ground

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    Re: It is green but circulating and...

    pH will test incorrectly while FC is at shock level, so ignore it for now. In order for this process to go quickly, it is extremely important to keep your FC at shock level. Test and redose often.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
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