Green Pool

[johnburr]

28,000 gal
above ground
vinyl
sand doller filter
sand
1 hp pump

have been putting in shock but never seem to get FC up

[mbar]

You aren't using enough chlorine to kill the algae. You have to get your ppm up to 20 and keep it there until the algae is dead. Once the algae is dead you will be able to hold free chlorine. Here is a bleach Calc written by one of our fourm members that can help you see how much to add:

http://www.hal-pc.org/~mwsmith2/BleachCalc262.exe

You have to be patient and dedicated - you will get your pool cleaned up!

[johnburr]

I don't want to sound stupid but how does the Bleach calc work I have put in numbers but does not give me how much bleach what am I doing wrong?

I put in 30 for pool lenth 6 for CL Strength 3 for quanity of bleach ( I assume this is the size of bleach bottle. and 15 ppm increase desired

[mbar]

You would need 9.3 gallons of bleach to raise your chlorine from .5 to 20 ppms in a 28,000 gallon pool with 6% bleach.

You have to put 28,000 in the "ppol size"
6 in the "Chlorine strength"
20 in the "ppm" increase"

click on calculate, and it will show how many gallons in the shaded area on the bottom.

[johnburr]

Mbar thanks

also which test kit at walmart is ok? Need something quick

Freshwater Master Test Kit?

[mbar]

Walmart used to sell a 5 way test kit. I am not familiar with any now - I used the one from Walmart a couple of years ago before I got "Ben's" kit. You can get any drop based kit for chlorine, do a search for "shot glass method" on this forum, and it will tell you how to dilute the test so it goes up passed five. Maybe someone will chime in here with some more ideas.