Green water. i need help please!!!!!!!!!!!

A BBB guide to supermarket poolcare.
Use store-bought bleach, baking soda
and borax to replace proprietary pool chemicals.
kamicat

Green water. i need help please!!!!!!!!!!!

Postby kamicat » Sun 17 May, 2009 13:50

i need help! my pool is green. i have 27 around and 52 deep. holds 19,000 gal i believe. i have heyward sand filter.


tc=0
ph=8.4
ta=40
ca=15-20


i am trying to use bleach, boric acid, and baking soda to get it clean

i normally use super pool shock powder and chlorine tabs.

somebody please help me!!!!!


chem geek
Pool Industry Leader
Pool Industry Leader
Posts: 2382
Joined: Thu 21 Jun, 2007 21:27
Location: San Rafael, California

Green water. i need help please!!!!!!!!!!!

Postby chem geek » Sun 17 May, 2009 15:29

Have you read and followed Defeating Algae ?
kamicat

Green water. i need help please!!!!!!!!!!!

Postby kamicat » Mon 18 May, 2009 15:45

i did read that. the water is beginning to look better. all of my tests are looking better also but my ph seems to still be too high. how do i get the ph lowered?
chem geek
Pool Industry Leader
Pool Industry Leader
Posts: 2382
Joined: Thu 21 Jun, 2007 21:27
Location: San Rafael, California

Green water. i need help please!!!!!!!!!!!

Postby chem geek » Mon 18 May, 2009 21:27

The pH test won't be accurate when there is a lot of chlorine in the water and it usually reads falsely high in that situation. If you are pretty sure that the pH was high even before you added chlorine, then you can use Muriatic Acid or dry acid to lower it. Use The Pool Calculator to calculate dosing and add about half of what it recommends just to prevent overshooting, then retest after at least 30 minutes (with circulation) and add more as needed.

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