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Thread: Might have to do first slam

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    Might have to do first slam

    Pool was looking a little dirty today so I threw in the vac and swept the walls. While sweeping saw a lot of "brown" dirt move about. Water has been slightly cloudy since. Can still see the bottom but it's not sparkling.

    Doing an OCLT to see what happens. FC was a little under my min for my cya level. Also seeing if just time clears it up.

    Question, for SLAM, I know I need the pump running 24/7, but at what speed? I typically have it run 12 hrs at 1000rpm during high electricity times and between 2200 and 2500 the rest of the time. Can I leave my normal settings or must it run higher?

    77000L (20500 gallon) vinyl in-ground chlorine double roman pool, 35'x17', Hayward SP3200VSP, Jandy Lite2 LJ400N heater, Hayward S244TC filter, *deleted* Hayward chlorinator, Taylor CK1004FAS+CYA

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    needsajet's Avatar
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    Re: Might have to do first slam

    24/7 is not an option for SLAM, and the more circulation the better of course, but if you haven't seen any dead spots, then there's no reason to change pump speed other than "for good measure"

    I don't think you need that high a speed at night, but your daytime speed might be a bit low. Only you will know. I use low speed, except medium speed for the cleaner, and high speed for backwash or a qood skim after a storm or before a party.
    12k IG salt; glass beads in plaster; K-2006C, K-1766, CCL, and Aussie 4in1 (HTH); Pentair Eco800 1.2HP VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; prior pool AG 10k | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

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    Re: Might have to do first slam

    Highest speed is just 7pm to 930pm. Then it drops due to noise considerations. Turns out we got a storm over night waiting to fully wake up before checking the fc

    77000L (20500 gallon) vinyl in-ground chlorine double roman pool, 35'x17', Hayward SP3200VSP, Jandy Lite2 LJ400N heater, Hayward S244TC filter, *deleted* Hayward chlorinator, Taylor CK1004FAS+CYA

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    Re: Might have to do first slam

    3rd speed is 1500 overnight. Not 2200 like the original post

    77000L (20500 gallon) vinyl in-ground chlorine double roman pool, 35'x17', Hayward SP3200VSP, Jandy Lite2 LJ400N heater, Hayward S244TC filter, *deleted* Hayward chlorinator, Taylor CK1004FAS+CYA

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    Re: Might have to do first slam

    Quote Originally Posted by needsajet View Post
    24/7 is not an option for SLAM
    I wrote this badly. What I meant was it must be 24/7 pump running for the SLAM. That is 24/7 is not optional. Sorry if that was confusing.
    12k IG salt; glass beads in plaster; K-2006C, K-1766, CCL, and Aussie 4in1 (HTH); Pentair Eco800 1.2HP VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; prior pool AG 10k | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

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    Re: Might have to do first slam

    No worries. I'm more wondering if low speed is ok or if it should be running higher for the 24/7.
    77000L (20500 gallon) vinyl in-ground chlorine double roman pool, 35'x17', Hayward SP3200VSP, Jandy Lite2 LJ400N heater, Hayward S244TC filter, *deleted* Hayward chlorinator, Taylor CK1004FAS+CYA

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    Re: Might have to do first slam

    Low speed is fine if it's circulating the water well enough and you don't have dead spots in the pool. What HP is the pump?
    12k IG salt; glass beads in plaster; K-2006C, K-1766, CCL, and Aussie 4in1 (HTH); Pentair Eco800 1.2HP VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; prior pool AG 10k | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

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    Re: Might have to do first slam

    I ran the low speed during the slam. My water was pretty clean the entire time I just realized I needed a slam because my SWG couldn't keep up with the demand.

    I think if your pool normally seems fine then keep what you are doing and slam. If your water doesn't clear up after a few days of slamming then turn it up some.
    Pool is done! Only took 17 months! - Natural shape in-ground pool: 37x23, 505sq ft, 96ft perimeter, 7ft deep end, 18,950 gallons, tanning ledge, blue surf pebble sheen/luminous blue blend, Belgard coping, 910 sqft paver deck/walkways, retaining walls out the yinyang. Jandy SWG, 2 LED Color lights, VS 2HP Pump, 460sqft cartridge filter, PDA RS P8 controller. My build

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    Re: Might have to do first slam

    Thanks all. Passed the OCLT with a drop of only .6ppm. Water seemed to be clearer this morning. It was overcast and still a little dark to really tell.
    The pump lists at 1.85 total hp
    77000L (20500 gallon) vinyl in-ground chlorine double roman pool, 35'x17', Hayward SP3200VSP, Jandy Lite2 LJ400N heater, Hayward S244TC filter, *deleted* Hayward chlorinator, Taylor CK1004FAS+CYA

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    Re: Might have to do first slam

    Quote Originally Posted by benjydog View Post
    Thanks all. Passed the OCLT with a drop of only .6ppm. Water seemed to be clearer this morning. It was overcast and still a little dark to really tell.
    The pump lists at 1.85 total hp
    What was your CC level at? After 4 days of slamming my pool was passing the OCLT but my CC was 1ppm.
    Pool is done! Only took 17 months! - Natural shape in-ground pool: 37x23, 505sq ft, 96ft perimeter, 7ft deep end, 18,950 gallons, tanning ledge, blue surf pebble sheen/luminous blue blend, Belgard coping, 910 sqft paver deck/walkways, retaining walls out the yinyang. Jandy SWG, 2 LED Color lights, VS 2HP Pump, 460sqft cartridge filter, PDA RS P8 controller. My build

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    Re: Might have to do first slam

    Before and after oclt it was 0.2ppm. In all my tests this summer, it's never been higher
    77000L (20500 gallon) vinyl in-ground chlorine double roman pool, 35'x17', Hayward SP3200VSP, Jandy Lite2 LJ400N heater, Hayward S244TC filter, *deleted* Hayward chlorinator, Taylor CK1004FAS+CYA

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    Re: Might have to do first slam

    Just a heads-up that you can use the 10 ml sample for everything we do, then each drop = 0.5 ppm FC
    12k IG salt; glass beads in plaster; K-2006C, K-1766, CCL, and Aussie 4in1 (HTH); Pentair Eco800 1.2HP VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; prior pool AG 10k | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

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    Re: Might have to do first slam

    Came home and to me the water has a green tint, not a white cloudy colour. Had passed the oclt last night.

    Raising my fc....it's SLAMin time

    Current readings:
    Ph: 8 (added all the acid I had left, should have been enough for about 7.6) it's always at 7.8-8, my aerators are always bubbling, can't stop them!
    Fc: 2.5 (added 8L to start, will recheck in a bit, math called for 12ish)
    Cc: 0 (was 0.2 this am but am testing with 10ml, didn't show any pink)
    Ta: 170
    Cya: 55
    77000L (20500 gallon) vinyl in-ground chlorine double roman pool, 35'x17', Hayward SP3200VSP, Jandy Lite2 LJ400N heater, Hayward S244TC filter, *deleted* Hayward chlorinator, Taylor CK1004FAS+CYA

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    Re: Might have to do first slam

    Take a pic each day looking down at your steps. It will help you track your progress.

    So given that your test readings were fine, you're slamming because water is not clear. Is that correct?

    Please add your test kit to your signature, thanks
    12k IG salt; glass beads in plaster; K-2006C, K-1766, CCL, and Aussie 4in1 (HTH); Pentair Eco800 1.2HP VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; prior pool AG 10k | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

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    Re: Might have to do first slam

    1 hr later....
    Fc-8 !?!?!?!?!
    Pool store said thier chlorine is 13% (whmis sticker said 10.5), but pool math says it's 6%. So either it was really old, or its been too hot under my shed where I store it out if the sun or my pool is A LOT bigger than I thought!

    Added another 10L, brushed everything and retested (under 30 mins later but it's now dark) and
    Fc-19 (according to pool math that jug was 10%...better, it was bought today)

    Unfortunately I'm out of chlorine until tomorrow afternoon. Hopefully what I've started is not for waste! The pool stores $30 algecide is so tempting (since that's the same cost of 30L of chlorine) but being a long time lurker (and believer) on this site, my conscience is telling me to resist

    Till the morning! Out **** algae, OUT!



    77000L (20500 gallon) vinyl in-ground chlorine double roman pool, 35'x17', Hayward SP3200VSP, Jandy Lite2 LJ400N heater, Hayward S244TC filter, *deleted* Hayward chlorinator, Taylor CK1004FAS+CYA

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    Re: Might have to do first slam

    Quote Originally Posted by needsajet View Post
    Take a pic each day looking down at your steps. It will help you track your progress.

    So given that your test readings were fine, you're slamming because water is not clear. Is that correct?

    Please add your test kit to your signature, thanks
    Great suggestion,thanks. Thought about doing a starting photo but got distracted. Will try in the am.

    I have a "custom" Taylor test kit. I believe it's basically the k2006 without ch. When I bought it 3 years ago, they had to out it together. Replaced all reagents this season. Will see if I can dig up the info

    77000L (20500 gallon) vinyl in-ground chlorine double roman pool, 35'x17', Hayward SP3200VSP, Jandy Lite2 LJ400N heater, Hayward S244TC filter, *deleted* Hayward chlorinator, Taylor CK1004FAS+CYA

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    Re: Might have to do first slam

    Quote Originally Posted by needsajet View Post
    Take a pic each day looking down at your steps. It will help you track your progress.

    So given that your test readings were fine, you're slamming because water is not clear. Is that correct?

    Please add your test kit to your signature, thanks
    Missed the why am I slaming....

    Correct. Water wasn't clear and today after work, looked like it had a green tint to it. Just now brushed the whole pool and saw lots of (sand like) dirty being kicked up.

    It's always been a challenge for me as the original owners put in a grey is liner. Both neighbours have deep blue liners, so my water has never looked like theirs. Mines always seemed " dull" compared to thiers.

    77000L (20500 gallon) vinyl in-ground chlorine double roman pool, 35'x17', Hayward SP3200VSP, Jandy Lite2 LJ400N heater, Hayward S244TC filter, *deleted* Hayward chlorinator, Taylor CK1004FAS+CYA

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    Re: Might have to do first slam

    The initial charge of chlorine is big, and the daily additions are a fair bit too, but as the algae dies, you'll notice the top-ups become less and less.

    I think you should just put K-2006 in your signature, sounds pretty close.

    Good luck with the MMMaintain part and brushing, and consider your CYA to be 60 (we round up, so use the next line down from what you see in the test).
    12k IG salt; glass beads in plaster; K-2006C, K-1766, CCL, and Aussie 4in1 (HTH); Pentair Eco800 1.2HP VS; Zodiac SWC 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; prior pool AG 10k | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

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    Re: Might have to do first slam

    Quote Originally Posted by benjydog View Post
    1 hr later....
    Fc-8 !?!?!?!?!
    Pool store said thier chlorine is 13% (whmis sticker said 10.5), but pool math says it's 6%. So either it was really old, or its been too hot under my shed where I store it out if the sun or my pool is A LOT bigger than I thought!

    Added another 10L, brushed everything and retested (under 30 mins later but it's now dark) and
    Fc-19 (according to pool math that jug was 10%...better, it was bought today)

    Unfortunately I'm out of chlorine until tomorrow afternoon. Hopefully what I've started is not for waste! The pool stores $30 algecide is so tempting (since that's the same cost of 30L of chlorine) but being a long time lurker (and believer) on this site, my conscience is telling me to resist

    Till the morning! Out **** algae, OUT!



    Sent from my SM-T330NU using Tapatalk
    I was under impression you need to tell PoolMath concentration of chlorine you going to use then it will calculate the amount based on that concentration. It can't possibly know what you got.
    44k plaster pool, Pentair 011018 pump, DE6020 filter, LED lights, K2006 test kit

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    Re: Might have to do first slam

    Arg. If your FC is low (10ppm or below), in the morning, focus on reducing pH to 7.2-7.4. 8 as a starting point is really high for a slam.

    Good decision on not buying the algaecide!

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