My first SLAM

[Mdragger88]

Its that darn java script ️

Poolmath/TFP time not matching

I have my location set in both Poolmath and here in TFP, but my Poolmath log shows actions in the future...?

www.troublefreepool.com

The future is now!

 

[Michelle22]

Last night FC 12.5
This morning FC 12

I'm calling it! That's two passed OCLTs in a row and I feel much better about things. Thank you ALL for your sage advice and for holding my hand through a time of confusion and slight panic. Hopefully I never have to do another SLAM, but if I do, I am much better equipped to handle it more quickly. A few days short of three weeks was becoming very monotonous and annoying. Here's one thing I know....GET THE LEAVES OUT ASAP when the ice melts.

 

[Newdude]

Hopefully I never have to do another SLAM, but if I do, I am much better equipped to handle it more quickly

That's up to you Sis.

When we say 'Don't ever get close to minimum FC', we *really* mean it.



I myself am thrilled to add a little above target, wasting an occasional glug or two, to help ensure I never lose 42 gallons and 2 weeks of my life.

 

[Michelle22]

PM tells me to stay between 3-5 and I will shoot for 5 or 6 from now on. Does that sound right or should I go even higher?

That's up to you Sis.

Oh, trust me, I know why this happened and it all started with the green duck person!! Very annoyed with me...and I KNEW better!!

 

[Newdude]

PM tells me to stay between 3-5 and I will shoot for 5 or 6 from now on. Does that sound right or should I go even higher?

You aren't looking to 'stay' 3-5. You are looking to donate your daily loss to the sky and land 3-5 afterwards. If tomorrow's test is a 3, then you landed with some cushion above minimum, but it's an end point, not a start point.

Double check the CYA is entered correctly in poolmath. Target for 30 CYA is 4-6 per the FC/CYA Levels. The daily dose will need to match the seasonal demand as it changes. Early and late season it could be 1 or 2 but it will likely be 3 or 4 a day now. As long as you land back in target range when it's time to dose next, you're doing great and should remain trouble free.

 

[Mdragger88]

U have a swg right?
So for 70cya - chart target is 5ppm, min is 3, minimum is hot lava… minimum is not a goal - target or above is the goal.
Many here w/swg’s shoot for 10% of cya to ensure there’s no skirting minimum incase of heavy bather loads or super uv days- so that’s 7ppm.
I have always had undersized swg’s & have to supplement w/ liquid chlorine so I just follow the manual chlorine side of the chart as far as minimum goes.
You may wanna double check that your cya is a solid 70ppm since u been backwashing & filter cleaning etc.

 

[Newdude]

U have a swg right?

GREAT catch !!! I had my wires crossed.

+1 CG. The SWG chart assumes you can produce at the level of UV burnoff for that point of the season and maintain a 5, 24/7.

Minimum of 3 is totally LAVA. You want to fluctuate down to 5 and not 3 to 5. 3-5 leaves too little wiggle room for a particularly high loss day, an impromptu storm or an afternoon full of swimmers.

 

[Michelle22]

I will check CYA again as soon as I get a sunny day. I'm guessing my SWG is also undersized because I had to add a bit of liquid chlorine every few days last year....or maybe I just didn't let it run long enough. Either way, maybe I should change my min to 5, max to 7/8? I'm fine with that. You folks are good peeps.

 

[Newdude]

Either way, maybe I should change my min to 5, max to 7/8? I'm fine with that.

That's a great plan for now. Adjust the plan as needed, like towards the end of the season when you have no problems maintaining some distance above minimum. We are all in the peak season now, losing more FC per day. With regular testing you'll know how the pool responded the last week or two and will expect it to do similar the next week or two. A few minor tweaks are needed to maintain your buffer throughout the season and you'll be crystal clear.

 

[Mdragger88]

With an undersized swg I need to be a solid 80 cya to keep up in the mid summer.
I try to maintain 10% of cya -
So easy maths
—> 8ppm or higher.
My current swg is a drape over situation so its not like all my water flows through the cell allowing for the “super chlorinating” benefits of a standard swg so i replenish fc Before I hit manually chlorinated min on the chart.

 

[Michelle22]

I just checked and my Intex SWCG says max pool size is 15k gallons. I'm under that, so perhaps it will do the trick if I let it run longer.

 

[Mdragger88]

I just checked and my Intex SWCG says max pool size is 15k gallons. I'm under that, so perhaps it will do the trick if I let it run longer.

W/ my 6500 gal pool the 15k gal unit was about 7hrs or so in the mid summer w/ 70-80 cya.
You will probably need to run it 11-12hrs w/ 80 cya & see where that lands u.
Remember- dose to target w/ liquid chlorine then see if it maintains, if it doesn’t, dose again & adjust run time / cya etc.
supplementing w/ bleach about once a week isn’t terrible for the dog days of summer.
Right now I’m doing that but in the milder weather mine keeps up .

 

[Michelle22]

I've been reading that you should get a SWCG that does triple the size of your pool. I failed. lol I am shooting for a target fc of 8 but I don't know how to change it in the app...or maybe I don't. We'll know more when the sun comes back this weekend.

 

[Mdragger88]

U just click on it & delete the pre filled target & replace it with your own.

 

[Michelle22]

U just click on it & delete the pre filled target & replace it with your own.

Yeah, I was just hoping to have it prefill each time instead of changing it. Thanks.

 

[Michelle22]

So, I didn't pass a third OCLT.

 

[Mdragger88]

So, I didn't pass a third OCLT.

Are u sure u were in darkness for both tests? They seem awfully far apart. There’s no need to do oclt every night- u passed 2 in a row, have clear water (no algae dead or alive) & .5 cc’s or less right?
Try cleaning your beaker with alcohol.
Go with target fc levels today
& try again tonight for reassurance .

 

[Michelle22]

I'll stop obsessing about it, but it's become such a habit it's going to be hard to break. I will vac and brush today and stick to 8 fc today. The tests were about 12 hours apart under complete overcast/rain, so that could be it. Thanks again.

 

[Mdragger88]

The rain can affect the oclt if the rain water on top hasn’t had a chance to mix with the bulk of the pool water yet when the sample was grabbed. I totally understand the worry of having to begin again but I don’t think that’s the case here.
Go swammin!

 

[Michelle22]

I wish we could! The water is only 77.7 degrees. Brrr. The water was mixed bc the pump was on, but who knows...there was a lot of time between tests. I'm going to toss it out and keep on keepin' on.