Hi, new to the site and really like all the info so far.
I am having trouble keeping my FC levels up this summer.
From what i have gathered so far, I need to Complete the shock process. I will sometimes have trace algae that i see when brushing the pool.
But after I get the shock process complete, is there a preferred level of CYA to have? I raised the level from <20 to 33 after a ton of rain.
Pool and latest test info:
12K gallons, in ground, DE filter, built last June
pebble surface, I am using tablets
Last night levels were:
FC - trace 0-.5
TC - .5 to 1
CYA - 33
CH - 440
ph - 7.6
I then added 3lbs of powdered Chlorine after measuring.
This morning the levels were:
FC - 3-4
TC - 3-4
CYA - 33
pH - 7.8
did not take a CH reading.
I guess my main question is:
A) am i losing all my Chlorine due to trace algae ?
B) am i losing all my Chlorine from low CYA ?