...something more complex going on?

[evad]

Jason,

I would like to ask about this "something more complex going on". I have followed the TFP methods for a couple years now and have had great success, I use bleach, borax and baking soda. This spring, the pool was like it always is, a dark green pond. (i believe my signature should show all the necessary data about the type of pool, but just in case i messed that up, i have a 20,000 gal, vinyl liner, IG, mesh cover, sand filter). I have a Taylor test kit with new regents. I followed all the steps for the shock process and got the water to the milky stage a couple weeks ago and it has stayed there. This morning the tests were as follows:
FC - 12.5
CC- 0 - .025
CYA - 35
PH - 7.8
TA - 140

Do you think I might have something more complex going on based on this information, and if so, what might that be? Thanks is advance.

 

[Isaac-1]

Where have you been maintaining your FC? You are now a little below shock level

 

[evad]

During the shock process, I maintained the FC between 13 and 15 until it held overnight and the CC was zero

 

[PSW]

Are you running your filter 24-7? A sand filter will sometimes take longer to clear a cloudy pool. What is your clean pressure, and when are you backwashing the filter? Lastly, you could add some DE to your filter and that might help clear the pool.

 

[evad]

yes, running 24/7 ..... clean pressure is at 15, the first week of milky water, i waited to back wash until it reached 23, the second week i have back washed more frequently, at least once a day - is there a preferred vendor for the DE?