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No I didn't slam it because there was no need at the time. It was perfect. No, no one to help. The problem, as I see it, is the fact that the CYA goes so high because of the tablets I am putting in. I won't ever use that stuff again, but when on vacation I see no alternative.

It WAS algae free.

I don't want to spend that much. I didn't ask how to fix it, bur rather how to avoid it next year. To answer a previous poster, our vacation is 7 days.

Yes, It goes down by about 2 ppm. I don't have a SWG. How much would it cost to change my system and how much trouble?

The wife used to take care of the pool with test strips. Green half the time. When I retired I got your kit, read this forum a lot and have solved my problems....well almost. Within a week after opening the pool I religiously adjust ALL of your recommended parameters (i.e, pH, CYA, CL, etc...

Thanks for the comments. My CYA was too high and the CL too low last year. My test strips didn't tell me the truth and i didn't know about this site. You guys got me straightened out. Thanks again...

I had a lot of problems last year with recurring algae. After finding this site and following all the rules listed here I finally solved it. So far this year the chemistry is perfect and the water crystal clear. It occurred to me that last year we had a bunch of kids use the pool regularly...

Before, during and since the last slam I was home every day and I can say for sure it never dropped below where it should have been. - - - Updated - - - When I first got the recommended test kit it CYA tested at 100. Since then some water was drained twice, and each time it came down...

I thought I would give an update and maybe get suggestions for next year. After the third slam the algae started coming back again, which was the subject of this post in the first place. The formation again was dust like and only in the center. The pool is now 1/4 drained and covered for the...

Its brushed daily and vacuumed about twice a week. Sometimes to waste, sometimes to the filter. The OCLT showed 0-1 up until a few days ago when the green came back (after I was gone for 3 days). I haven't checked it again since the fc was raised.

I have made a thorough inspection. All of the contaminants are dust like and settle to the bottom. There is nothing on the side walls, or even the steps. I also made the graph you cited to chart the performance, and that told me when the slam was finished last time. For the third time last...

The start of my slam, getting the test kit and following the directions didn't all happen at once. I found this site after the initial Cl addition. If I knew the 24 at first I wouldn't have added that much. When I added the cl I couldn't test. Since one addition didn't do anything I kept...

It was a T. This was my criteria: You are done when: CC is 0.5 or lower; You pass an OCLT (ie overnight FC loss test shows a loss of 1.0 ppm or less); And the water is clear. When that happened, I let the FC drop. I just dumped in some CL in the begining and the 50+ is where it...

Above ground, 24'x52". The filter runs 7 to 10 am and 7 to 10 pm. Full sun most of the day. The water temp had dropped to about 72 (it was crystal clear then) but has now risen to 82 with the past week of hot weather. I added the clarifier because I detected cloudiness, which was always the...

TF100 test kit. The water is green throughout, with some settlement on the bottom (green dust). Nothing on the sides. 24' round pool, vinyl, 1.5 HP sand filter. Its dark now and work tomorrow so pics and sig will have to wait.

The FC had been running 8-9. I check it every single evening after sundown. The daily loss was 1. I purposely kept it above target in view of the past problems. I had been putting in a pint of 8.25% bleach every day and it never went below 8. Since I would miss sat and sun treatments I put...

I'm starting a new thread so nobody has to read thru all of the old trials and tribulations... To summarize: Had a pool for 25 years and never had algae problems before. The third time it happened this year I found this site. Bought the recommended kit, did the slam, etc, etc. Switched to...

I read in some threads that pool store shock is not recommend by the people on this forum. The shock at my pool store is 12.5% Sodium Hypochlorite. Another pool store sells 10.0% Sod. Hyp. The chemical company down the street sells "fresh pool chlorine" and its 12.5% Sod. Hyp. The grocery...

That's what's in there now...

Before the slam is WAS in the shadier spots of the pool. Now, its just in the center, where it is 100% sunlight. It's "loose" in that it collects there due to the circular motion caused by the filter. It looks green to me. Its very fine. I have a battery operated pool vacuum that is very...

I followed the slam guidelines posted here, not something I made up myself. I bought your kit, so I know the numbers, its not a test strip. It was above slam shock numbers for 4 days straight, with vacuuming to waste each day, and the FC went down by only 1 each day. One day it went up, not...

ANOTHER UPDATE - SAME THREAD: I'm adding to the thread rather an starting a new one. The pool has been vacuumed many times, each time to waste. The SLAM was continued for days, per the letter of the law. The CYA has come down to 60, basically thru the wasting and adding water each time. The...

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OK, I just can't believe it. See post #12 results. The pool had been vacuumed to waste several times in the last week, and the water was clear and nothing on the bottom. One day later the FC dropped to 16 and there was a light green film on the bottom, with a few larger "dust spots" where...

OK, got the recommended kit and have results to share: FC = 22 CYA = 90 pH = 7.2 TA = 120 CH = 225 eSince I last wrote I have only added minimal CL since the values were known to be high due to the shock added. I have been cleaning the bottom to waste frequently to remove the settled residue...

Pardon my tardy reply, been away on vacation. OK, the recommended test kit is on order - should be here next Tuesday. I'll report back with the "correct" numbers then. What really troubles me is that I've had algae before, but it always went away with little effort. This stuff is Odd...

* 24' Above ground pool * Aquachek test strips * Aquacheck "High CL" test strips for readings above 6 * pH verified with a laboratory pH meter * 12.5 % sodium hypochlorite We've had a pool for 24 years and probably never knew what we were doing but never really had an algae problem before like...

OK, I lied. The algae problem isn't solved. So let me provide the details. Opened the pool in May, perfectly clean water, no problems Stayed OK until late June - minor algae, added 4 gal of Shock, adjusted the pH, had it under control in a day. Last week it came back again - it took 16...