Added flocculant instead of shock!

Causes and cures for cloudy swimming pool water.
Milky pool water, white, pink, brown, purple, black cloudy water.
JenniferT333
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I'm new here
Posts: 1
Joined: Sun 01 May, 2022 16:00
My Pool: 20,000 gallon play pool
Pentair Triton II sand filter

Added flocculant instead of shock!

Postby JenniferT333 » Sun 01 May, 2022 16:39

Hello! First, I know I’m an idiot LOL. I had some trouble with mustard algae stains that didn’t go away after a full week of shocking and brushing with stainless steel algae brush. So, I researched and found cal-hypo shock was the best to use, then bought the HTH green to blue box which had 4 bags of shock and 2 bags of flocculant. I didn’t read the box or instructions and assumed all bags were shock. So naturally, I poured 2 bags of flocculant right into the pool with the pump running. Next day it was murky so I attached my automatic vacuum and let it run for the day, then last night removed the vacuum, backwashed, and decided to just pour the 4 bags of shock in there. Because why not LOL. Today it looks like milk. I read that flocculant can ruin sand in filter. Sand was replaced 2 years ago. Circulation seems good although I’m 10 psi higher than normal. Any advice before I have to replace sand and/or drain pool? Should I backwash again? Or just let it run 24/7 until it clears up? Thanks for any advice!


Teapot1
Pool Industry Leader
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Joined: Thu 29 Apr, 2021 00:43
My Pool: 12000 gallons vinyl liner,

Re: Added flocculant instead of shock!

Postby Teapot1 » Tue 03 May, 2022 12:39

Sounds like the sand has maximum capacity of dirt hence pressure rise so give it a really good backwash for 3 minutes and 1 on rinse. Note the pressure when you start filtering again and leave it running for 24 hours.
If you really are an idiot I will remind you to turn off the pump before changing the valve position, but you're not so I know you'll remember to turn it off.
I may not give you the answer you want to hear, but I will give an honest opinion of your situation as you decribe it.
sktn77a
Pool Enthusiast
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Posts: 14
Joined: Sun 16 May, 2010 17:03
My Pool: 15000 gal inground gunite/plaster (converted from concrete/acrylic). 1hp StaRite DuraGlass P2R pump, 24" Hayward Sand Filter, Teledyne-Laars 250k heater, Hayward CL200 chlorinator, Polaris 380 cleaner with Hayward 6060 booster pump.
Location: Chapel Hill, NC

Re: Added flocculant instead of shock!

Postby sktn77a » Fri 03 Jun, 2022 11:19

The cloudiness after adding 4 bags of chlorine is dead algae. Just keep filtering until all the cloudiness is gone.

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