1 month with clody water
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Guest
I've bought the TF-100 kit and I tested with that, the first reading yesterday was 4.1 FC way below the 11 reading from wednesday, and after I added the chlorine it was 40 FC, I added 4 gallons, I told my wife to add 2 gallons but i forgot I had told her, and I added the other 2 gallons....is it going to be ok?
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chem geek
- Pool Industry Leader
- Posts: 2381
- Joined: Thu 21 Jun, 2007 21:27
- Location: San Rafael, California
Cloudy Pool Water
Well at least now we know why it got so high. Yes your pool will be OK. Just make sure the pool is exposed to sunlight and the FC level will drop relatively quickly. Keep the pump running (at least during the day) to circulate the water as most of the chlorine breakdown from sunlight comes near the surface. I'm assuming you still have sun where you are this time of year 
If for some reason the FC doesn't drop -- say you've got bad weather so no strong sunlight -- then we can force the FC to drop faster by adding a chlorine reducer, but just see how it goes today and remeasure tomorrow and report back here.
I know that 40 ppm FC sounds insane, but so long as your 60 ppm CYA measurement is reasonably accurate, the disinfecting chlorine level is no different than 1 ppm FC with no CYA which is very similar to many indoor pools (it's also similar to 21 ppm FC with 30 ppm CYA). Yes, that's sort of high in that my wife always complains that her swimsuits degrade (elastic wears out) over one winter of use in an indoor pool while in our own outdoor pool with CYA there is virtually no degradation, but we're talking swimming 3-4 times per week during the winter for 5 months.
So relax for now and see how the FC drops over time. As I said, worst case we can force it down faster. Also, see how the cloudiness changes. The main thing that probably happened with the extra chlorine, other than the higher FC, is a high pH which will then drop back down as the FC gets used up. Fortunately, high pH (basic/alkaline) isn't nearly as much of a problem as low pH (acid).
I don't think you mentioned -- is your pool vinyl or plaster?
By the way, you may soon run out of R-0871 FAS-DPD titrating reagent even if you use the 10 ml sample to measure the high chlorine levels since at 40 ppm that would be 80 drops. You can instead use a 5 ml sample where each drop counts as 1 ppm FC and you'll use half the amount of reagent for the test while still be approximately accurate enough for the high FC level. Once the FC drops after you're done shocking, you can go back to using a 10 ml sample or 25 ml sample (10 ml sample has each drop count as 0.5 ppm while the 25 ml sample has each drop count as 0.2 ppm).
Richard
If for some reason the FC doesn't drop -- say you've got bad weather so no strong sunlight -- then we can force the FC to drop faster by adding a chlorine reducer, but just see how it goes today and remeasure tomorrow and report back here.
I know that 40 ppm FC sounds insane, but so long as your 60 ppm CYA measurement is reasonably accurate, the disinfecting chlorine level is no different than 1 ppm FC with no CYA which is very similar to many indoor pools (it's also similar to 21 ppm FC with 30 ppm CYA). Yes, that's sort of high in that my wife always complains that her swimsuits degrade (elastic wears out) over one winter of use in an indoor pool while in our own outdoor pool with CYA there is virtually no degradation, but we're talking swimming 3-4 times per week during the winter for 5 months.
So relax for now and see how the FC drops over time. As I said, worst case we can force it down faster. Also, see how the cloudiness changes. The main thing that probably happened with the extra chlorine, other than the higher FC, is a high pH which will then drop back down as the FC gets used up. Fortunately, high pH (basic/alkaline) isn't nearly as much of a problem as low pH (acid).
I don't think you mentioned -- is your pool vinyl or plaster?
By the way, you may soon run out of R-0871 FAS-DPD titrating reagent even if you use the 10 ml sample to measure the high chlorine levels since at 40 ppm that would be 80 drops. You can instead use a 5 ml sample where each drop counts as 1 ppm FC and you'll use half the amount of reagent for the test while still be approximately accurate enough for the high FC level. Once the FC drops after you're done shocking, you can go back to using a 10 ml sample or 25 ml sample (10 ml sample has each drop count as 0.5 ppm while the 25 ml sample has each drop count as 0.2 ppm).
Richard
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Guest
thank you Richard, my pool is plaster and yes I used 80 drops of the reagent, my fingers got tired. The water this morning, before I came to work, was clearer but it still had white cloudiness, but was not green. I left the pump running all night long and all day today, so when I get home I will check it and do a FC test again, as sun light goes, well today was very sunny, so I know the FC is down, I will post my new readings later today if not tomorrow morning. So, for how long do I keep the FC of 24? and once the water is clear, where should I keep my readings by that I mean the FC, PH, CYA,TA?
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chem geek
- Pool Industry Leader
- Posts: 2381
- Joined: Thu 21 Jun, 2007 21:27
- Location: San Rafael, California
Cloudy Pool Water
You will want to check your FC after the sun is off the pool in the evening and then again early in the morning so you can see if it drops overnight. If it does, by more than 1 ppm, then you're still either killing algae or oxidizing it. If it looks like all the algae is dead (no more green -- all gray/white) and it's taking too long to clear (i.e. your patience is running out) then you can use the floc as was suggested earlier, but let's wait to see how things look tomorrow before getting to that. Right now, the most important thing is to have all of this algae killed and it sounds like that is getting done.
You do need to start thinking about how you want to manage your pool long-term after we get this current issue cleared up. With the CYA of 60 ppm, you'll need to maintain about 7 ppm FC (absolute minimum of 4.5 ppm) to prevent algae using chlorine alone and you'll have to use a source of chlorine that doesn't add to CYA, such as bleach or chlorinating liquid. You'll need to add that frequently, probably every day or two, but can use The Liquidator to automate that (or can convert to a salt pool and get a saltwater chlorine generator, but that's a much bigger initial expense). The other option is to use a regular weekly dose of PolyQuat 60 algaecide which will let you operate at a lower FC level -- probably in the 2-3 ppm range though it will help prevent algae from forming even if you let the chlorine drop near zero for not too long. Another option is to use an expensive phosphate remover. You could also dilute some of the pool water to reduce the CYA level which would let you operate at a lower FC level, but you'd still need to maintain that FC level without fail unless you used an algaecide or phosphate remover.
By the way, what kind of filter do you have? Sand, DE, cartridge?
As for your readings, I assume you will use a hypochlorite source of chlorine in which case the pH target will be around 7.5 though you might let that drift up to around 7.7 if your pool has lots of aeration and you're fighting a rise in pH (though that is partially mitigated by a lower TA). The TA will be about 80, though as just stated if you have lots of aeration you might go lower. CYA is up to you, but affects the FC level you will need to maintain -- probably the 30-50 range is manageable, but if you are in an area with lots of sun then higher CYA values of 60-80 ppm help retain the chlorine more, even at higher FC levels, but that gets tricky unless you have some insurance (i.e. algaecide or phosphate remover). Calcium Hardness (CH) will depend on the other parameters, but will likely be around 200-300 though if you go with a TA lower than 80 than you'll have a CH that is somewhat higher (say, 400). The saturation index will be targeted to be around -0.2 to -0.1. Let's just take one step at a time and you can make some of these decisions later after your pool is cleared up.
Richard
You do need to start thinking about how you want to manage your pool long-term after we get this current issue cleared up. With the CYA of 60 ppm, you'll need to maintain about 7 ppm FC (absolute minimum of 4.5 ppm) to prevent algae using chlorine alone and you'll have to use a source of chlorine that doesn't add to CYA, such as bleach or chlorinating liquid. You'll need to add that frequently, probably every day or two, but can use The Liquidator to automate that (or can convert to a salt pool and get a saltwater chlorine generator, but that's a much bigger initial expense). The other option is to use a regular weekly dose of PolyQuat 60 algaecide which will let you operate at a lower FC level -- probably in the 2-3 ppm range though it will help prevent algae from forming even if you let the chlorine drop near zero for not too long. Another option is to use an expensive phosphate remover. You could also dilute some of the pool water to reduce the CYA level which would let you operate at a lower FC level, but you'd still need to maintain that FC level without fail unless you used an algaecide or phosphate remover.
By the way, what kind of filter do you have? Sand, DE, cartridge?
As for your readings, I assume you will use a hypochlorite source of chlorine in which case the pH target will be around 7.5 though you might let that drift up to around 7.7 if your pool has lots of aeration and you're fighting a rise in pH (though that is partially mitigated by a lower TA). The TA will be about 80, though as just stated if you have lots of aeration you might go lower. CYA is up to you, but affects the FC level you will need to maintain -- probably the 30-50 range is manageable, but if you are in an area with lots of sun then higher CYA values of 60-80 ppm help retain the chlorine more, even at higher FC levels, but that gets tricky unless you have some insurance (i.e. algaecide or phosphate remover). Calcium Hardness (CH) will depend on the other parameters, but will likely be around 200-300 though if you go with a TA lower than 80 than you'll have a CH that is somewhat higher (say, 400). The saturation index will be targeted to be around -0.2 to -0.1. Let's just take one step at a time and you can make some of these decisions later after your pool is cleared up.
Richard
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Guest
just came home from work, and my water is very blue and almost clear I can see the bottom and no algae to be seen any where, is just a little hazy in the white range. Tomorrow I will, run a full test on it, and will keep the chlorine at 24 just to be safe. How much is the liquidator? Their web side does not have a price. Richard, you rock!!!
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Guest
Another thing, I just bought a 30 pound bucket of the power powder plus from Leslie's is almost brand new, should I continue to use this thing or should I switch to liquid? Also if I buy the liquidator, how long would the Chlorine last inside the container, I just want to know an estimate of the days this chemical would last before I have to refill it again. Again thank you so much for the wealth of knowledge you're giving me. 
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Guest
well...is Saturday and my pool is crystal clear and bright, no algae to be seen anywhere, my water is pristine, and here are my new readings, FC=15.5, PH=7.2, T/A=80, CH=400, CYA=46 . now please tell me where should I keep my readings to prevent this cloudy issue from coming back As for the cal-hypo, what should I do with it? I have about 30 pounds of this stuff. Also I want to get the "liquidator", does any body here know where to get it?
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chem geek
- Pool Industry Leader
- Posts: 2381
- Joined: Thu 21 Jun, 2007 21:27
- Location: San Rafael, California
Once you meet the three criteria of 1) water crystal clear, 2) minimal (<= 1 ppm) drop in FC overnight and 3) minimal (<= 0.5) ppm Combined Chlorine (CC) measurement, then you will need to maintain an absolute minimum FC level of 3.5 ppm and I would target maintaining an FC of 5.3 ppm or so. I would not use the Cal-Hypo (Leslie's Power Powder Plus) since your CH is already high enough. If you can't take it back, store it tightly and it should last a while, though it doesn't last as long as Trichlor (which lasts years).
This thread talks about The Liquidator and gives some links of where people bought it and for what price.
You can let your pH drift up on its own to around 7.5, but the clearest water will have the pH somewhat lower. If you want, you can lower your TA a bit to 60 ppm and then you can maintain the pH at 7.5 more easily, but that can be done later.
Just to play it on the safe side, have your phosphate level tested by the pool store, but do NOT buy anything from them (other than chlorinating liquid, if you want). I just want to make sure they aren't super high and want to give you other options of what to do at this point -- algaecide or phosphate remover IF you want, but chlorine should be enough and is less expensive.
I'm really glad your pool got cleared up. Having the appropriate FC level for the CYA level is the most important factor of keeping pools free of algae easily and also clearing pools of algae blooms, though as I said there are other more expensive alternatives.
Richard
This thread talks about The Liquidator and gives some links of where people bought it and for what price.
You can let your pH drift up on its own to around 7.5, but the clearest water will have the pH somewhat lower. If you want, you can lower your TA a bit to 60 ppm and then you can maintain the pH at 7.5 more easily, but that can be done later.
Just to play it on the safe side, have your phosphate level tested by the pool store, but do NOT buy anything from them (other than chlorinating liquid, if you want). I just want to make sure they aren't super high and want to give you other options of what to do at this point -- algaecide or phosphate remover IF you want, but chlorine should be enough and is less expensive.
I'm really glad your pool got cleared up. Having the appropriate FC level for the CYA level is the most important factor of keeping pools free of algae easily and also clearing pools of algae blooms, though as I said there are other more expensive alternatives.
Richard
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Guest
...you know what's funny? the "store" sold me so much garbage I probably spent close to two hundred dollars in that month, and I never got any where near the condition where my pool is right now, with just $10 worth of Home depot chlorine, I will never ever follow their advise, my pool right now (Sunday) is so clear and bright, that it actually hurts to look at it with the sun reflecting on it. Thanks to you, my pool looks the way it is and my kids can't get enough of it. I owe you a case of beer.. 
. you are an asset to this forum, again thank you very much, and I will follow your advise as how to keep future readings, I'm also looking into the Liquidator the 8 gallon unit, it looks promising and thank you for the link, my hat is off to you... 
. you are an asset to this forum, again thank you very much, and I will follow your advise as how to keep future readings, I'm also looking into the Liquidator the 8 gallon unit, it looks promising and thank you for the link, my hat is off to you... -
chem geek
- Pool Industry Leader
- Posts: 2381
- Joined: Thu 21 Jun, 2007 21:27
- Location: San Rafael, California
Thanks for the compliment. I have to give full credit to the folks at The Pool Forum since that's where I first started getting educated about this. I did a lot of the pool water chemistry research and analysis on my own before finding that forum, but without tying it to experience from many real pool users, it wasn't nearly as helpful. Ben Powell who created The Pool Forum (and its companion site poolsolutions(dot)com) was key at first getting to the whole truth about how to properly take care of pools -- it's too bad he hasn't been heard from in quite some time.
The site I linked to in my previous post regarding the Liquidator, Trouble Free Pool, is where many from The Pool Forum have gone since registrations are open there. This site is one I visited when The Pool Forum stopped taking new registrations and stopped being available outside North America, but before Trouble Free Pool became available. I don't know how long I'll stay with so many forums. It would be easier to just stick with the others, but I wanted more info and feedback to hone some of the theories on water chemistry...so we'll see.
At any rate, I'm again glad your pool is now in good shape.
Thanks,
Richard
The site I linked to in my previous post regarding the Liquidator, Trouble Free Pool, is where many from The Pool Forum have gone since registrations are open there. This site is one I visited when The Pool Forum stopped taking new registrations and stopped being available outside North America, but before Trouble Free Pool became available. I don't know how long I'll stay with so many forums. It would be easier to just stick with the others, but I wanted more info and feedback to hone some of the theories on water chemistry...so we'll see.
At any rate, I'm again glad your pool is now in good shape.
Thanks,
Richard
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tylercalexander
one week uncloudy?
hi,
first time on this site. i've had my pool for 4 yrs. i just added all the needed chemicals. currently my pool is a light green color. you can see the bottom of the shallow end somewhat. there is green algae on the sides of the pool and there a few leaves in the bottom of the deep end.
the pool is vinyl lined and doesn't have the best pump.
my question. how can i get a clean pool by next weekend may the 2nd.
my wife will love you forever!@
thanks
tyler
first time on this site. i've had my pool for 4 yrs. i just added all the needed chemicals. currently my pool is a light green color. you can see the bottom of the shallow end somewhat. there is green algae on the sides of the pool and there a few leaves in the bottom of the deep end.
the pool is vinyl lined and doesn't have the best pump.
my question. how can i get a clean pool by next weekend may the 2nd.
my wife will love you forever!@
thanks
tyler
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