Green Water from return

candim555

Member
Jun 3, 2010
8
Please help, I am battling green color algae right now. As instructed by my pool place I added 3 pounds of Shock and 5-6 ozs of Clarifier and Algaecide. the next day it was still green and chlorine reading still low, added 2 more lbs of Shock and Clarifier and Algaecide. Pool is not green anymore, however it is very cloudy and algae settled at bottom. Chlorine reading is 3-5. I tried to vacuum the pool and when I do green water comes out of the return. I tried backwashing and rinsing my sand filter and vacumming again and it is still happening, please help, I am so frustrated with this. thanks! I have a 18' above ground pool with a Jacuzzi sand filter.
 

NWMNMom

TFP Expert
LifeTime Supporter
Apr 8, 2007
1,582
Waaay NW MN
You may have to run the backwash/rinse cycle longer or a few more repetitions to clear the sand filter of the dead algae.
 

duraleigh

Admin
Mod Squad
TFP Expert
Platinum Supporter
LifeTime Supporter
In The Industry
Apr 1, 2007
31,713
Sebring, Florida
If I understand your first post, you are getting debris coming from the returns while you are vacuuming.....not just after backwashing.....is that correct?
 

candim555

Member
Jun 3, 2010
8
Yes, that is correct, while I am vacuuming my return water is coming out green. On just the normal filter cycle it is not.
 

candim555

Member
Jun 3, 2010
8
I vacuumed to my waste and everything was okay. Tested my water and my alkalinity was high at 230. My water is no longer green, but it is very cloudy. What should I do now??? I shocked it again this morning and added 1oz of clarifier to it.
 

zea3

Mod Squad
TFP Expert
LifeTime Supporter
Jul 10, 2009
11,079
Houston, Texas
Just so I have this right, are you saying green water and debris are going into the pool when you vacuum, or that when you vacuum you are seeing green water and debris coming out of the discharge hose onto the ground or wherever your waste water goes?

You will be done shocking the pool when your FC number holds overnight (dusk til dawn) with only a 1ppm drop, your CC is .5 or less, and the water is clear. The filter should be running 24/7 while you are in the shock process. We really need to see a set of current test numbers to give you the best advice. If you do not have a test kit, have the pool store test a sample and get a copy of the results to post here. Don't buy anything else from the pool store. Anything you just added to the water, such as clarifier will take a couple of days to work if it works at all.
 

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