3 weeks of SLAM, still cloudy :(

U definitely have algae- even with draining & refilling you will still need to complete the SLAM Process - it will just go a bit faster due to starting with less organic load
 
Ok, thanks for reality dosage. :)
Put about 1/4 cup of DE in through skimmer. Psi jumped 1psi. Jumped into the yellow a couple hours after. Backwashed into the green. Safe to let pump run overnight and tomorrow while at work after backwash, or still enough DE in there to maybe cause pressure spike?
Got me a new little vacuum and hose too to play with after work tomorrow. 👍
 
Question - whatcha all recommend for mesh covers so I don’t have to do this next year?
I'll let the others walk you though the SLAM. But as someone who overwintered an Intex two winters, near trees, successfully, I have a couple tips for you. These apply more or less in general, but with an uncovered pool, or mesh cover, much more so.

Firstly:
3 weeks of notes to go over, exhausted from this pool - will try to remember all relevant info. Seems like info overkill, but this seems like a pretty detailed oriented community. Here goes:
You cannot wait till the end of June to open. I know, life gets busy. But as you've unfortunately learned, clearing a mess is WAY harder than maintaining a clear pool.

Here's my pool March 13th, 2021, the end of my first overwinter. This was the first day the pool had had no ice since November of 2020. Note that there is a slight green tint. Despite the water being some 40 degrees, with the full sun and leaf debris, algae was already starting to take hold.
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March 16th. Green is more pronounced.
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March 20th. Here is where I woke up on the weekend, looked at it, and said "I've got to open now or this will turn into a giant mess."
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The thing is, at this point it's still not bad. But again, we're now exactly 1 week since the ice melted. It's not even officially spring yet! But open I must, as I overwintered without a solid cover. Note that a solid cover will help keep the pool from going green. You won't have lots of debris, and the shading from sunlight will slow algae. But it won't eliminate it, and even with a solid cover things will be bad if you wait till June to open.

So, I said not bad. I added two gallons of 12.5% if memory serves, pouring around the edge of the pool. I brushed to mix it around. Then I spent the rest of the day hooking up my filter and starting the fill. Note the green vanished about instantly. If you catch it by this point, it's easy, but wait any longer and...well, I don't need to tell you. :confused: Note this picture was taken mere hours after the above picture, as I was putting together the filter and filling the pool back up completely.
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I netted out the leaves, finished filling by afternoon, and got the pump running. Kept it at SLAM levels and it only took a day or two to finish. Water is cold still, and algae hadn't gotten established, so it was quick.

March 28th. Pool is clean, clear, and ready to swim. Except you'd want a dry suit cause the water was still 50 degrees. :ROFLMAO:
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And that's the sucky part. My pool is now clean and clear and a joy to look at. But I could only look for two months until the water actually got warm enough to swim! But, and here's the key point: Maintaining a clear pool when it's cold? Dead easy. You need to add chlorine like once a week. Empty the skimmer basket as needed as dead leaves or helicopters fall in. Occasionally net/vacuum as needed. Very, very little work.

And as soon as the water is warm enough? Jump right in! The pool is just ready and waiting for you at this point!

Going hand in hand with this, once it's too cold to swim, you can't close the pool. Again, you have to maintain it for another couple months. But as the water cools off, it becomes easier and easier. Same as the spring, the chlorine demand slows WAY down, so eventually you're back down to once a week chlorine additions. Heck, you're at twice a week not long after the water is too cold to swim. Again, just net as the leaves fall, empty the skimmer basket as needed, occasionally vacuum. Only after the water drops below 50 should you consider an official close. I like waiting even longer, but once things start hitting freezing for anything more than a light frost at night your latest deadline has arrived.

When the water is finally cold enough to close, make sure you've netted and vacuumed out all the leaves before closing. Follow the guide for closing an above ground pool here. This includes a final take the FC up to SLAM level 24 hours before you do the partial drain and pull the filter. Without a cover, some Polyquat 60 algaecide also wouldn't be a bad idea. Note, however, this is the only time TFP recommends the use of algeacides, and only this particular type (we DON'T want to any any algaecide that contains copper or other metals!).

If you close and then a warm snap hits, check and maintain the chlorine by pouring around the edge (go all the way around in a circle, spreading it out), then brush to mix it in or throw a submersible pump in and stick the hose to circulate water around to mix.

For vacuuming, I did have a simple manual vacuum that attaches to the Hayward through-wall skimmer I have. I can recommend both. But my Aquabot Pool Rover Jr did the vast majority of my vacuuming for me. Occasionally I'd intersperse a manual vacuuming to get finer stuff the Pool Rover Jr doesn't get.

The most annoying part of this entire thing was the main leaf fall. I had to empty the simmer basket twice a day some days just to allow water to flow, and net out leaves regularily. But this is only for a week for the majority of this, and just a few weeks total.

Hopefully this helps you have a truly trouble free pool next year. :)

P.S. You're already so far into the SLAM, it's probably best to just continue. But at some 9000 gallons or less your pool holds, if it ever ends up as bad as your first picture again, my personal recommendation for an above ground pool like this is that is it's easier and cheaper to wait for a calm two days, then drain the pool, clear out the junk at the bottom, rinse it out, refill, and start fresh. Unless you're on a well that can't fill the pool in one go, and trucking in water would be expensive.
 
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Thanks for tips! Yeah, I definitely closed too early. Was scared of forgetting and have the pump freeze or ice pill the liner down if I didn’t drain right away. Might work better if I leave skimmer running this year into November. But the amount of leaves I have is a LOT.

I did try opening in mid May. My SLAM has been that long. April - pool was still frozen or partially thawed if memory is correct. Definitely March I think it was still. And it was never green. It went straight to brown in December. :)

I think maybe smart thing I could do is keep running my little backup ump from the old 18’ intex that was useful for first couple weeks of my pre-fill slamming. I can run that till December, and if that freezes, I won’t feel so bad.

Refill is a borderline call for me. The old 18’ pool was about 5,000gal. It had the inflatable ring top and HAD to come down every year. Usually before Columbus Day cause after that - it was too cold for me to hang it over my bench swing, climb underneath, and spend a good 30-60min spray cleaning it out and then drying it for two days. But it was super clean at refill each June! I have public water, but we’re on a hill and need a water pump. I don’t like running that pump for more than an hour or two continuous - so I gotta turn off pump when filling overnight and live with the trickle. It works, but it’s slow. Especially at 8,000gal vs 5,000gal.

One positive about leaving the water in - it’s warm enough already!
If I had refilled, it’d be at least a little bit colder - and I don’t have the circulation from that sub-70deg anymore. :)
I’ll take every degree I can get.
 
If u backwashed u likely removed all the de. It’s something u must replace after backwashing.
4-5 doses of DE tonight in 2oz increments . Lost count, had to backwash about 15min afterwards each time. Nice and dirty on backwash, must be working. 👍 photo attached.

Depth of clarity was about 12” tonight, which is good improvement over the 9-10” past couple days. Which is odd, cause it *looks* worse today. 😂. Got excited when I could read the numbers on the tape measure down to 25”, but then realized I lost an 1” to evap and backwash. Oh well, I’ll still take the improvement.

Couple rounds of aggressive brushing kicked up about four full screens worth of pulverized leave debris. Amazing how after so long, and so much brushing, it’s so incredibly laborious to get every last bit of it. I really think I need to climb in this weekend and just go physically removed it.

Some pics attached for anyone else on wk4 of a SLAM. It’s real easy to get real tired and forget to check the simple things like did you remember to clear debris out the screens on the intakes and the last chance filter on the pump. Wondered why my psi was so low. Oops.

Shoulder surgery is gonna offset cost of drain and refill real quick if we go into wk5 of SLAM. :)

Thanks for all the tips and support gang. It’s much appreciated.
 

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When it gets cool out, stalk FB Marketplace / offerUp / craigslist. You should be able to find a big pool filter and pump on the cheap. Besides the filter being small, the pump is also and that's whats needed to push the water through the filter half a bazillion times. Even with 2 of them, it's taking forever.

They are expensive on the used market at the moment, just like boats, but both plummet in value as the season ends.
 
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When it gets cool out, stalk FB Marketplace / offerUp / craigslist. You should be able to find a big pool filter and pump on the cheap. Besides the filter being small, the pump is also and that's whats needed to push the water through the filter half a bazillion times. Even with 2 of them, it's taking forever.

They are expensive on the used market at the moment, just like boats, but both plummet in value as the season ends.
I proposed to the fam that we just swim in the ocean going forward. Their look of non amusement suggested I stay the course and that I should seek out a larger pump, a proper winter cover, and an earlier pool opening next year. :)
 
and an earlier pool opening next year. :)
You can test and add bleach all winter with no cover when it's not frozen. A regular dose will last 2 weeks to a month once it's cool. You can brush it around in less than 5 mins and guarantee a clean opening. As it warms up those long dose intervals will shrink back down to regular
 
U have been at it a while - be sure to get a check on your cya to be sure u are at the right slam fc level. Keep on truckin!
 

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I proposed to the fam that we just swim in the ocean going forward. Their look of non amusement suggested I stay the course and that I should seek out a larger pump, a proper winter cover, and an earlier pool opening next year. :)
You don't need an expensive "proper" winter cover. If you get leaves and ice, you really should get A cover. Years ago, i bought a mammoth tarp from Amazon or Walmart - big enough to cover our pool water surface, plus 2 feet to go UP the wall from the inside and 4 feet to go DOWN the wall on the outside. For us the best way to tie down is to attach 1 or 2 ropes to each grommet and lash to the metal legs in a way that the rope can't slide up. We take more rope and wrap the corners to take up the excess. With a previous round pool we had to do it differently - a ratchet wire was involved, but still a lot of rope lashed to ground stakes. Also, an inch or 2 of water inside the cover will hold it in place really well. We bought a tiny sump for getting the spring pond off (by spring, it's usually 12+" deep).

We're in Western Massachusetts - Zone 6a for gardening. We close mid-October and open mid-May (but I suction off the water on top of the tarp and pop the thermometer in around early May). We close when the water stays consistently below 60 and open just before it gets to 60. I have always followed the TFP advice for opening and closing, so with a SWG and a summer CYA level of 70, I boost my FC to 24, then pump down below the ports and cover. Other than the year we accidentally dropped all the leaves and sludge from the cover into the pool, we open every year to beautifully clear blue water and 2-3 ppm FC. I do have to clean the tarp each year - not the pool side but the scuzzy nasty exposed side, that grew all kinds of funk with snowmelt, rain, leaf debris, pollen, and farm dust all over it. To clean, I hose it down and take a big garage broom to it, scrubbing every inch before letting it dry. Then I flip it over, rinse off the grass from the pool side, let that side fully dry, fold it up and it's ready for next year. Every year, my husband looks at the mess and suggests we toss it and buy a new one, and every year I rol my eyes and spend an hour cleaning it. It's not difficult, and it saves days of scooping leaves out of an AG pool that i can barely reach over (I'm short and brushing from the outside of the pool is very difficult for me).

Last year, I came up with a brilliant plan to fill the pool while it was still covered - thus keeping as much of the early spring tree debris and pollen off as long as possible. It worked suprisingly well, and we were swimming within a couple days of removing the tarp. It was tricky in that we had to loosen one side of the tarp (to get water samples) and we couldn't brush at all, but as soon as the water was high enough for the pump to work, we were able to dose LC. With the solid cover and the cool temps, the chlorine demand was quite low.

If you really don't want to cover, then perhaps the spring drain, scrub, and refill would ultimately be less work and less stressful.
 
The calcium hardness is way too low, get the salt and add in to get you around 250+ it should immediately clear up.
No, it won't. A vinyl pool doesn't have a minimum CH requirement, and adding CH isn't going to make the water clear. Low CH is only of concern insomuch as it can lead to a negative CSI for plaster or stone pools (and some fiberglass gel coatings), but negative CSI is not an issue for a vinyl pool.
 
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The calcium hardness is way too low, get the salt and add in to get you around 250+ it should immediately clear up.
I'm sorry, but this is not needed in vinyl lined pools that don't have a heater. In case they do have a heater the calcium is added to protect the heater element.

Calcium does nothing to clear up a pool.

Maddie ☮️
 
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You don't need an expensive "proper" winter cover. If you get leaves and ice, you really should get A cover. Years ago, i bought a mammoth tarp from Amazon or Walmart - big enough to cover our pool water surface, plus 2 feet to go UP the wall from the inside and 4 feet to go DOWN the wall on the outside. For us the best way to tie down is to attach 1 or 2 ropes to each grommet and lash to the metal legs in a way that the rope can't slide up. We take more rope and wrap the corners to take up the excess. With a previous round pool we had to do it differently - a ratchet wire was involved, but still a lot of rope lashed to ground stakes. Also, an inch or 2 of water inside the cover will hold it in place really well. We bought a tiny sump for getting the spring pond off (by spring, it's usually 12+" deep).

We're in Western Massachusetts - Zone 6a for gardening. We close mid-October and open mid-May (but I suction off the water on top of the tarp and pop the thermometer in around early May). We close when the water stays consistently below 60 and open just before it gets to 60. I have always followed the TFP advice for opening and closing, so with a SWG and a summer CYA level of 70, I boost my FC to 24, then pump down below the ports and cover. Other than the year we accidentally dropped all the leaves and sludge from the cover into the pool, we open every year to beautifully clear blue water and 2-3 ppm FC. I do have to clean the tarp each year - not the pool side but the scuzzy nasty exposed side, that grew all kinds of funk with snowmelt, rain, leaf debris, pollen, and farm dust all over it. To clean, I hose it down and take a big garage broom to it, scrubbing every inch before letting it dry. Then I flip it over, rinse off the grass from the pool side, let that side fully dry, fold it up and it's ready for next year. Every year, my husband looks at the mess and suggests we toss it and buy a new one, and every year I rol my eyes and spend an hour cleaning it. It's not difficult, and it saves days of scooping leaves out of an AG pool that i can barely reach over (I'm short and brushing from the outside of the pool is very difficult for me).

Last year, I came up with a brilliant plan to fill the pool while it was still covered - thus keeping as much of the early spring tree debris and pollen off as long as possible. It worked suprisingly well, and we were swimming within a couple days of removing the tarp. It was tricky in that we had to loosen one side of the tarp (to get water samples) and we couldn't brush at all, but as soon as the water was high enough for the pump to work, we were able to dose LC. With the solid cover and the cool temps, the chlorine demand was quite low.

If you really don't want to cover, then perhaps the spring drain, scrub, and refill would ultimately be less work and less stressful.
Thanks, those are great tips!
 
Feels like I’m just treading water past week. Same approx 12” of vision. Not getting worse, not getting better. The DE helps somewhat in generating a dirtier backwash- but at insignificant volume. Psi climbs so high that I can only run pump for about 10-15min, then backwash that same amount of water that pump can pump in 10-15 min. That’s never gonna get there. Holding at FC16 for 7days will require me to quit my job. And holding at FC12 for four consecutive days last week before CYA climbed didn’t yield much better results than FC16 at night, crash to FC 4-6ppm during sunniest hours, and returning to FC12 in the evening.

This pool has been brushed to death. There is still some debris that occasionally floats up after brushing- but I’m never gonna get it all till I can see it. Scrubbing blind.

Debating between absurdly higher FC, partial drain and fill, or clarifier. Doing the same routine for next few days is just gonna generate wasted bleach and muscle fatigue.

🙁
 
How often are you getting between filter cleanings now ?
I disconnected my secondary little cartridge pump the other night to steal the hoses to dump the extra backwash from DE loads a bit further away from deck and pool. I was only having to clean that every couple days cause it wasn’t clogging and flow was still strong.

The sand pump - without any DE - can go days now without needing backwash. And it wasn’t that dirty. I haven’t deep cleaned it since the 2nd time I did a week ago. On its own - neither pump/filter is really catching what’s left. The DE seems to, but catching extra stuff a couple of cups at a clip is gonna take all summer. And today I noticed the backwash from DE treatments were a lot less gunky.

Feels like I’m missing something here. Steady progress, and then diminishing returns and just kinda hovering at steady state. There were a number of days during week I wasnt able to keep at SLAM level due to work - but it didn’t seem to go backwards much either. The fact that CC is usually consistently so low is still a head scratcher for me. If pool is still riddled with algae - wouldn’t I see high CC more?

I’m starting to develop very strong feelings of dislike for this swimming pool. :)
 
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If pool is still riddled with algae - wouldn’t I see high CC more?
You would if it was alive. What you have is a boatload of dead algae (with maybe a little still holding on for dear life).

Sand filters by far test the patience of any SLAMer the worst.
 
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