Hey!
I’m 11 days and 36 gallons in and running out of POP!
14000 gal AGP with sand filter. Adjusted my PH to 7,2 and TA to 80 before starting. CYA was between 35 and 40. Used 16 as SLAM level.
Day one was bad! Checked and added chlorine every 30 mins for the first few hours. Water went from dark green to brown and then to bright green. Checked levels and added chlorine every hour for the next few days. Brushed and vacuumed every day.
Deep cleaned the filter on day 6 because I was reading everything I could find on here to help me figure out why we were going through chlorine so fast but seeing no change. Filter was awful and really needed that!
I also checked my CYA again - and it was less than 30 - I don’t know where it went?! I added stabilizer 1 lb at a time and after 3 lbs (over 3 days) it still didn’t read at 30 but I keep the SLAM at 16 knowing it had to be at least 30 but was likely not all the way down to 0 before adding.
Days 6,7,8,9 - chlorine consumption dropped significantly. I was only adding about a gallon total each day. Checking levels every 3-4 hours and still brushing and vacuuming daily. Water has been milky green with no change except I can see I little further into the pool.
Yesterday (day 10) I rechecked the CYA and it is 40, but maybe a little more than 40….I can definitely see the dot at 50 and not at 40 but questioned myself at the halfway point between the 40 and 50, so I decided to round up and keep my SLAM at 20. (back to the sun, quick glance at waist level, multiple tests with that sample)
So now I’m 2 days into SLAM at 20 but back at a higher chlorine consumption during the day and still no change in the green color.
There is nothing in the pool that could be holding onto algae. I’ve scrubbed the skimmer and outlet multiple times. I just don’t know what else to do.
Is this normal? I’ve had a green pool before and it only took about 2-3 days to get to the blue/gray color and about a week to be clear. Please help!
I’m 11 days and 36 gallons in and running out of POP!

14000 gal AGP with sand filter. Adjusted my PH to 7,2 and TA to 80 before starting. CYA was between 35 and 40. Used 16 as SLAM level.
Day one was bad! Checked and added chlorine every 30 mins for the first few hours. Water went from dark green to brown and then to bright green. Checked levels and added chlorine every hour for the next few days. Brushed and vacuumed every day.
Deep cleaned the filter on day 6 because I was reading everything I could find on here to help me figure out why we were going through chlorine so fast but seeing no change. Filter was awful and really needed that!
I also checked my CYA again - and it was less than 30 - I don’t know where it went?! I added stabilizer 1 lb at a time and after 3 lbs (over 3 days) it still didn’t read at 30 but I keep the SLAM at 16 knowing it had to be at least 30 but was likely not all the way down to 0 before adding.
Days 6,7,8,9 - chlorine consumption dropped significantly. I was only adding about a gallon total each day. Checking levels every 3-4 hours and still brushing and vacuuming daily. Water has been milky green with no change except I can see I little further into the pool.
Yesterday (day 10) I rechecked the CYA and it is 40, but maybe a little more than 40….I can definitely see the dot at 50 and not at 40 but questioned myself at the halfway point between the 40 and 50, so I decided to round up and keep my SLAM at 20. (back to the sun, quick glance at waist level, multiple tests with that sample)
So now I’m 2 days into SLAM at 20 but back at a higher chlorine consumption during the day and still no change in the green color.
There is nothing in the pool that could be holding onto algae. I’ve scrubbed the skimmer and outlet multiple times. I just don’t know what else to do.
Is this normal? I’ve had a green pool before and it only took about 2-3 days to get to the blue/gray color and about a week to be clear. Please help!