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When you say to point the return down, so I forgo the circulation?

Skimmer is closer to the shallow end, on the beginning of the slope from shallow to deep. Probably about 8' away

cloudy - milky blue. I had algae, but I think I am getting that under control

Nope. No floor drain

In my vinyl lined, sand filter pool (35'long x 17'wide, oval) I have one return. I am relatively new to TFP, but have gotten rid of a really bad green algae problem. I have one issue left - the deep end never clears up. My deep end is 8' 6" and the shallow end is 3'. The return is at the deep...

I am in Vienna, VA (Mid-Atlantic). Pool gets full sun all day.

I probably did not drop out enough water, but I also did not run the filter between the refill and the test. So I just dropped the water again down to an inch below the skimmer, but this time I used my vacuum head to sink the vacuum hose to the bottom of the deep end and took water out of there...

So through my tests I have discovered that my CYA is 100+, all due to trichlor. I have turned off my chlorine feeder and removed the remainder of the trichlor tabs. I have dropped my pool water to an inch or two below the skimmer once and brought it back up in attempt to get CYA to good normal...

I see the dilema. This is probably why I had such a horrible time fixing the pool last year and again this year. I will drain water and refill, then retest CYA.

While I agree that my CYA is high, I have been reading posts that indicate that CYA of 100 is not unheard of and not horrible (saw a post from waterbear on that). Question - can I use shock to raise the FC level to 7 and have a useable pool? I ask, because I have not had the opportunity to enjoy...

I bought the first test kit you listed. I guess that's not the right one. How much water would you say to drop out of the pool and replace? Once I do that, then what? Retest and get pH/TA back in acceptable range and then chlorine?

After reading more on this web site about CYA and FC, I to realized what you are saying is true. My CYA is way too high and my FC is way too low. I just shut down my chlorine feeder, which had the trichlor pucks in it and I will be buying some gallons of liquid chlorine bleach tomorrow. Weird...

I did buy a reagent kit from Leslie's and I also take water samples into Leslie's quite frequently, especially given the problems I have been having. Here are the results from today FC 2 CC 2 pH 7.2 TA 110 CYA 100 Keep in mind, I do have a sand filter, with the zeo-brite sand and a Hayward...

Well, on the recommendation of the local Leslie's Pool Supply manager I tried Green To Clean today. Raised the pH to 8, threw in 3 lbs Green to Clean and 2 lbs of Power Powder Plus shock. Gotta do the shock again at 3am (12 hours after first application) and again at 3pm tomorrow. So far the...

I have a 23K gallon, vinyl lined, in-ground pool, with a Hayward pump and 300 lb sand filter. Water is green with algae, even though my water condition is good (pH: 7.4, Chlorine 5+, TA 100). Pump is running 24/7. Shocking every few days to try to get rid of the algae. Even changed the sand out...