Went from green to cloudy and hasn't changed

pnwpool

Member
Jun 18, 2011
6
Took a weeks vacation and left our crystal clear pool.

Returned to find a jungle green swamp. My bust. I should have bumped up the chlorine more before we departed and had the neighbors pour some liquid cl.

Commenced the SLAM process immediately after getting the covers off.

Over three days the water rapidly went from jungle, to medium, to very light green. Back washed numerous times. Using DE to assist the sand filter, also. During that process we also gained visibility of all three steps with the top step being clear and the next two blurry.

We maintained a SLAM level for a week before letting the chlorine drift down so we could check the PH.

Three days ago the numbers were.

PH 7.2
FC 5.5
Cc 0
Cya 60

We re SLAMmed the pool and it passes the OCLT.

Today's numbers are

FC 23.5
Cc 0
Cya 55

Our problem is the water looks identical to day three after our alge bloom. What is causing our water to remain cloudy? I have spent a lot of time researching the forums and am only coming up with SLAM the pool. That would be fine if there were any progress being made. However, I don't see any change in the water clarity. And no Cc would seem to mean there is no alge being killed?

Pump has been running in high 24/7.

TF100 test kit.

The pool store is pushing phosphates as the problem. I don't agree.

Any suggestions? Please help us get our clear pool back.

I have an ipad picture but can't figure out how to make it small enough to send.
 

Butterfly

TFP Expert
LifeTime Supporter
May 30, 2007
10,045
South Carolina
Yes, recheck the filter. You should see at least some improvement daily.

Maintain the SLAM process and do not let up until you pass all three tests. See red lines in my sig.
 

pnwpool

Member
Jun 18, 2011
6
Back to SLAMming.

Yes, back washing about once a day.

Is there anything that might assist us with expediting away the cloudiness.

Thanks, kurt
 

karmabiker

TFP Expert
LifeTime Supporter
Jan 28, 2013
1,079
Houston, TX
Are you using pressure to indicate when to start the backwash or just rolling once a day?

Thinking that the DE add method or back washing as soon as you see the pressure rise may be in order.


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zea3

Mod Squad
TFP Expert
LifeTime Supporter
Jul 10, 2009
11,724
Houston, Texas
If you continue to pass the OCLT but the pool is still cloudy, try turning the pump off overnight and allow pool to sit undisturbed for about 12 hours. If the water clears and there is a lot of debris on the floor vacuum it out very slowly disturbing it a little as possible. If you find this to be the case then you have a lot of debris to filter out and sometimes it takes a while. Adding enough DE to cause a 1 pt rise in pressure helps to clear the water more quickly. Replace the DE after every backwash.
 

pnwpool

Member
Jun 18, 2011
6
I backwash about once a day - Based on a pressure increase. Replenish DE post backwash.

We can now see the second step clearly (progress!). We'll keep the press on.
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,880
Silver Spring, MD
I'm with JohnN, you are probably backwashing too often. Sand filters won't catch the finer particles if you backwash frequently. Wait until the filter pressure goes up 25% from the starting pressure before backwashing.
 

pnwpool

Member
Jun 18, 2011
6
Almost there. Can just break out the main drain - 8 ft. Looking forward to finishing this and getting back to clear water. Thanks for all the help.
 

JohnN

Well-known member
Jun 24, 2012
977
Howell, NJ
You may want to consider adding some DE to your filter if you have passed the OCLT and have less than .5 ppm CC. It could help speed up this last little bit.