SLAM Q

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JackHarkness

JackHarkness

Well-known member
Oct 29, 2010
73
Temecula, CA
Heya all,

About maintaining FC to shock levels - does this mean adding chlorine in bright daylight or waiting until night to "bring it back up" to shock levels? Also I forgot to test pH before I started, so unfortunately it's possible my pH is like 8 or something. But in the future, if I were to adjust pH beforehand - roughly how does the procedure work for that? Is there a long wait involved. Does the pool pump have to run for 24 hours after acid is added to the deep end?

Thank you
 
You want to bring your FC back to SLAM level as often as you can. See SLAM Process for the full scoop.

Usually you only need to wait 15 minutes or so after adding acid with your pump running to reduce pH to verify you've hit your target.

Yes, pump needs to run 24/7 during the SLAM.
 
Add acid slowly in front of your return, not directly to the deep end. Same for bleach/liquid chlorine.

You can add chlorine every hour during SLAM if you're able. That will speed up the process quite a bit. Or as often as you can, but not less than 3x a day.
 
Thanks everyone.

Verified my CYA as 45 just now.

Ironically I'm running out of DPD powder (eep).

Also - do you all recommedn walking around perimeter of the pool slowly putting in chlorine then throwing it acrosss the pool in increments? I do it this way to focus the chlorine around problem spots with maybe some algae (corners). Or should I be adding chlorine right near the return? I never know what I should be doing exactly when distributing chlorine...should have asked sooner lol
 
Add your liquid chemicals in a pencil size stream at the pool return with the pump running. Do NOT walk around the pool adding it. That just creates lots of potential to spill it on your pool deck and yourself.
 
Sincere thanks to everyone here. Question follow up:

If I put a pencil size stream of chlorine into the pool - do I duck down, do I try to put it from higher up so it "dives" deeper? The return I have (pool legit only has 1) is a little deep (4" into the pool).

Also how long must one run a pump after chlorine addition usually? Thank you....considering the pump already runs 6 hrs prior...and I only add chlorine at night (I believe someone said this is the most ideal way)?
 
Pour it as close to the surface of the pool water as you can. Less chance of splashing.
Typically 30 minutes of running the pump will disperse the chlorine.

It can be added at any time during the day. Preferably at about the same time each day.
 
Hi Marty,

Thanks for all your help.

1) So the thing I heard a long time ago about adding chlorine after sunset isn't really that true? I always avoided adding chlorine in the day.
2) When I usually add chlorine at night, that's when I run the pump (not during the day). But assuming I did it during the day, and I add chlorine, is it still wise to turn off the pump for the night after 30 mins? I would imagine this results in most of the chlorine just ending up on the cartridges and being wasted? Shouldn't I theoretically add it when the pump will operate for 5 hours min?

Proud to say the pool looks amazing, after additions of 6 128 Oz jugs of chlorine over the past 3 days. I must admit, the staining I see that was unbrushable is gone, every corner looks pretty great almost...slight organic "Set in" stains on the plaster left. It's not all gone yet*. So I'm running the pool 24/7 at least until those go - and I'm brushing later tonight.
 
Some folks believe that adding the chlorine at night keeps it at a higher level to 'kill' any organics with out competing with the sun. But really, as long as your FC is never below minimum, it matters not.

Not sure I follow the pump run thing. Run the pump for at least 30 minutes after adding the chlorine. It should be added at the pool return in a pencil size stream. In 30 minutes it is well dispersed throughout the pool water.
 

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I didn't realize in 30 minutes it would be throughout the pool water, because in my mind its a stream of chlorine - goes into the return - which goes to the pump...then comes out of a hole in my pool near the stairs. Thought it would take time for it to disperse.. When you say return you mean the one that sucks water into the pump right? :/ Or the place where water comes out of?
 
No - the returns are where the water 'returns' to the pool. The skimmer is the suction side.

Chlorine is hydrophillic. It seeks to disperse into water.
 
My pool is set so the majority of the suction is this hole in the middle of the pool against the left side of the pool. The skimmer isn't the main suction (has enough tiny suction to get leaves in the basket)

I've been pouring the chlorine in the "IN"/Suction side - not the return. Oh god x_x lol
 
The bulk of your suction should be at the skimmer. The main drain is not necessary from a pool circulation aspect.

Never pour chemicals directly into the skimmer.
 
JackHarkness said:
My pool is set so the majority of the suction is this hole in the middle of the pool against the left side of the pool. The skimmer isn't the main suction (has enough tiny suction to get leaves in the basket)

I've been pouring the chlorine in the "IN"/Suction side - not the return. Oh god x_x lol
Click to expand...
I think he may be referring to a vacuum port.
 
JackHarkness said:
That's exactly what I'm mentioning. a Vacuum port. I don't use a cleaner. I use a pool hose that I connect to it and then attach it to my pool brush for manual cleaning. When the hose isn't connected, the most suction is from that vacuum port. Thats is what I've been referring to for clarification :).
Click to expand...
Well that's dangerous to someone swimming in the pool. You either need to get a spring loaded cover that goes onto that port and gets opened when you plug the hose into it or it's valved off at your equipment pad. Most of your pool suction should be coming through the skimmer. Let's have pictures of your equipment pad so we can see what you have there and instruct you as to what can be valved off.
 

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