Quick Question on When to Add Clarifier – Before or After Shock?

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Petar K

New member
Hey folks,

Just a quick one. I’ve been using the AquaDoc Natural Pool Clarifier (the one called Nature’s Remedy) and really like it so far. Water has been looking way better since I started using it.

Only thing I’m not sure about is timing. Should I be adding the clarifier before I shock the pool, or wait until a day or two after? I’ve seen people say different things and want to make sure I’m doing it right.

Appreciate any tips from those who’ve been using it regularly.
 
I usually add the clarifier after shocking the pool, since the shock can make the water cloudy and the clarifier helps clean up the leftover debris. But it’s a good idea to check the product guide, since some products may have specific instructions. Personally, I find it works better this way.
 
I’ve always had the best results waiting a day or so after shocking before adding clarifier. The shock does its job first, killing off organics, then the clarifier can clump together the fine particles so your filter can grab them. If you add it before, the shock can just burn it off and waste the dose. I treat clarifier more like the “finishing touch” once the water chemistry has settled.
 
I usually treat clarifier as a “follow-up” step, wait at least a day after shocking. Shocking tackles the organics first, then the clarifier gathers the tiny particles so your filter can catch them. Adding it beforehand can reduce its effectiveness since the shock might break it down before it has a chance to do its job.
 
I’ve tried it both ways, and adding clarifier after the shock definitely gives me better results. What I usually do is let the chlorine level settle back down a bit after shocking, usually overnight, then add the clarifier the next morning while the pump’s running. If you toss it in too soon, the high chlorine can neutralize it before it even starts working. Waiting that extra day makes a noticeable difference in how clear the water looks by the next afternoon.
 
I used to throw clarifier in right after shocking, thinking it’d help speed things up, but it honestly didn’t do much. What’s worked better for me is waiting until the chlorine level drops back into the normal range, not zero, just not sky-high, and then adding the clarifier. That way it actually has a chance to bind the fine particles instead of getting broken down by the strong chlorine. I usually run the pump overnight after that, and by the next day the water’s noticeably clearer.
 
I usually wait until the chlorine level settles after shocking, usually the next day, before adding clarifier. If you put it in too soon, the high chlorine can break it down before it even works. Once levels are back to normal, I pour in the clarifier while the pump’s running and let it circulate for a full day. That combo always leaves my water looking crystal clear by the following morning.
 
I’ve noticed the same thing, clarifier only really shines after the shock has done its job. I usually shock at night, let the chlorine work overnight, then check the levels the next afternoon. Once the chlorine has come back down to normal, I’ll pour in the clarifier and let the pump run continuously for a day.

That routine keeps the water from going hazy after a shock and helps the filter pick up the fine stuff the shock leaves behind. Tried adding it before once, and it barely made a difference, lesson learned!
 
Just got back from a weekend with friends over and my pool was kind of a mess, not green, just that annoying dull haze that won’t quite clear. I shocked it that night because bather load was heavy and combined chlorine was creeping up. Next morning free chlorine was still high and the water looked worse, which always messes with my head.

What finally worked for me was treating clarifier as the cleanup crew, not part of the shock. I let the shock do its thing first and waited until chlorine drifted back down into a normal range, for me that’s usually the next day when pH is back around 7.5 and the saturation index isn’t out of whack. Then I added the aquadoc natural pool clarifier with the pump running steady. Within a few hours the fine gunk started clumping, filter pressure jumped about 3 psi, and by the next morning the water looked way more settled. Tried once adding it too soon and I’m pretty sure the high chlorine just burned it off.

Now my routine is shock first, patience, then clarifier as the finishing touch. It’s slower, but it actually works and I’m not wasting product. Anyone else notice their filter loading up faster after clarifier, or is that just my setup acting up again?
 
I usually shock first, keep the pump filtering overnight until chlorine starts coming down and the oxidation phase is done, then I add AquaDoc Natural Pool Clarifier Nature’s Remedy so it can bind the fine stuff for the filter to grab, since shock can cloud things up short term and the clarifier cleans up better afterward.
 
I’d definitely wait until after shock, but I’ll explain why in a way that finally made it click for me.

Think of shock as demolition and clarifier as cleanup. When you shock, especially after heavy bather load or if combined chlorine is elevated, you’re oxidizing organics. During that process, the water often looks worse before it looks better. You’ve got tiny oxidized particles floating around that weren’t there before. If you add clarifier while free chlorine is sky high, a lot of it just gets broken down before it can actually bind anything.

What I do now is shock in the evening with the pump running, let it circulate overnight, and check free chlorine and pH the next day. Once chlorine drops back into a normal operating range and pH is stable, then I add clarifier. That’s when it can actually grab the fine particles and help the filter do its job. I usually see filter pressure rise a couple psi after a few hours, which tells me it’s catching something.

If you add clarifier first and then shock hard, you’re kind of undoing your own work. Shock is aggressive. Clarifier works best in calmer, balanced water.

So short version, shock first, let it finish oxidizing, then clarifier as the polish step. It’s slower, but it wastes less product and clears more consistently.
 
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