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A simpler question - is it ok to add sequestrant with a new full and circulate a few days without filtering?

My pool was already shut down for the season. Now I am replacing the liner before winter rather than doing so in the spring to ensure the pool is good for an early spring event. I am filling with city water hauled in, but there is iron on the city water in my area. My old liner was stained, and...

Thanks, RJS. Winter cover it is then.

I have an auto cover. I am trying to identify a leak in the pool. Since I am about ready to close the pool, and the water level needs to go down anyway, I am allowing the water level to drop from the leak hoping it will stop at some point, and I can figure out where the leak is based on where it...

Can anyone comment on the wisdom (or lack thereof) of doing your own liner replacement? I am a very solid do-it-yourself-er, but I do not want to regret trying this. How about directly purchasing a liner on line? If you think that is a good idea, does anyone have experience with any on line...

Joyful Noise, I am not experiencing any odors this year. That was only happening last year when things were out of whack. And yes, opening it regularly did help eliminate the odor. Thanks for the suggestion to open the pool regularly when not in use.

Texas Splash, thanks for reminding me of the bacteria mechanism. I remembered reading about how CYA disappears over the winter, but thought it was algae. I did not recall it was bacteria. Thanks also for the "bad batch" thought. That may well be what it is. I bought an unusual brand of CYA...

Joyful Noise I have a fully opaque auto cover on my pool, and when things are right like this year, I only lose 1 or 1.5 ppm per day if the pool is not used. You are right that I will see 2 to 4 when it is open, but I was seeing that when it was closed up tight. Nobody ever complained about...

Joey Thanks for your input. I add the stabilizer in a sock put inside the skimmer. I have been doing that for quite some time and it has always worked well. I always wait a week to check my stabilizer level after an addition. So I am confident that my addition methods and testing regimen are...

Wow. That thread is deja vu for me from last year. I chased all of the things that came up in that thread and had an almost identical experience - everything looking good but chewing up the chlorine day after day. Sorry I was not around to share what I had seen. I am really convinced it was the...

Is there anything other than algae that consumes CYA. I have added enough CYA to have raised the CYA 80+ ppm (21 pounds in 30,000 gallons), and I am still below 40. I have not had a single algae outbreak, and everything has looked good all season. I jus can't figure out why the CYA is not coming...

Hopefully this is an appropriate place to post this. It has been a long time since I have been in the forum since this year has gone very well thanks to all the help from the TFP community. Thank you. It has been nice to spend the time enjoying the pool instead of trying to figure it out. I...

I would bet you are clogging quickly because it is picking up the particles making it cloudy. I do not have a sand filter so I have not done it before. But reading the procedure and thinking of the flow dynamics I think the pressure should rise and settle in pretty quickly after you add the DE...

Marsha, what kind of filter do you have? Once the SLAM is killing the algae faster than it is reproducing, you will eventually kill it all (or nearly all). That is when you will pass the OCLT. That test tells you that there is only a very small amount of "stuff" consuming your chlorine...

they just need a remote control robot that will pour jugs of bleach into your pool!

by the way, if your OCLT was only 0.5, and your CC is 0, then the only thing missing is clear water - it sounds like you are close to finishing the SLAM if you can get the water clear my only note of caution is that the OCLT being low could be deceiving if you are not brushing the whole pool...

the same thing happened to me - I diluted pool water samples to get into the range for the basic kit I had before the TF100 - for example, if you are trying to stay around 15 or 16, and your basic test kit only goes to 5, then dilute 1 part pool water with 3 parts plain water, test, and multiply...

one thing does not make sense - you said your FC went up 5 with a gallon of 6% bleach - your volume is 4800 gallons per your signature - 1 gallon of 6% should have taken it up 13 if your pool volume is correct - so something is not quite right - either it dropped a bunch in three hours since the...

I stopped by a local pharmacy and bought a bunch of 10ml syringes for 25¢ each - fast easy accurate although I do have the same bottle you showed - I use it to squirt liquid chlorine into the niches behind my lights once a week

+1 I have had times that I thought my CYA dropped 10 with no explanation - then I realized it was an overcast day - I wait a day or two for a nice sunny day, test again, and voila - right back where it was

tough to say for sure, but I will take a decent guess... you say you lost 2ppm FC in your OCLT last night - I will assume that was over 8 hours and that you will consume 6ppm in 24 hours for organics - but you will also burn FC from sun, and I do not know how fast that will happen - your CYA at...

oh yes - (almost) every day - I may skip a day once or twice during the week if the pool does not get opened or used - shoot we had a pool party recently, and I tested halfway through the party, and we closed the pool for an hour for fireworks, and I added chlorine I was just commenting that...

shoot, I don't even use Pool Math for chlorine - I know how many ppm I get from a jug and do it in my head now

yes, you can ignore the pool store advice - as long as you do not have any plaster or grout or mortar that is in constant contact with the pool water - low calcium in a vinyl liner is not an issue - in fact I try to keep my CSI (calcium saturation index - calculated by Pool Math) slightly...

plain old bleach is a perfectly good source of chlorine - so yes, going to the supermarket and getting bleach is fine - be sure to adjust the % in Pool Math to what you are using - and be careful that you are using plain bleach - stay away from anything that is scented or the "no splash" bleach...

one note on measuring CYA - if you use Pool Math, it gives you the amount to add in both weight and volume - so you can use a measuring cup all day - plus, in all honesty, you do not have to be crazy precise anyway I also wanted to reemphasize the earlier comment suggesting the speed stir -...

how do we know he needs to slam? would an OCLT be in order to determine if he really needs to slam? or are you thinking to slam now to be safe? also, to get the water nice and clear more quickly, a sand filter may need some DE added to help speed it up - ADD DE TO A SAND FILTER - a sand...

texasdad - have another look at the chlorine/CYA chart - if your CYA is 70, your target FC is 8, and your minimum is 5 - you should not usually keep it below 5 with that CYA level

given the flood conditions all around and the perfect clarity of the pool, I am guessing this must be a TFP member - I think I see their TF-100 on the table there next to their Speed Stir