[ 9 AM FC=20.5......... CYA=50(wont check cya till Tuesday, this will make one week after adding stabilizer)
Its nice that you saw a dramatic difference at least in color in 2 daysJedc, you sound a bit skeptical/anxious about the SLAM working. I just want to reassure you that it REALLY works. It DOES take time, you do need to follow the proceedure exactly, and it does require patience. But the best byproduct is the ultimate control you will have and the future trouble free pool
In my books, you've been slamming for ONE day, not a week.
While I expect you'll be looking at a week for it to clear, possibly more, just remember that in warmer temperatures, the algae can grow back anytime your FC drops below your shock/Slam value...so if half the day its a few points below SLAM, well then that time is wasted. So dose a few ppm above if you're going to be away for more than a couple of hours.
The slam also works much faster if you remove any leaves/debris. As you will see below, my swamp back in 2012 could not be vacuumed to waste for quite a while (clogged too fast) so I used a leaf rake and a "leaf gulper" that works with a hose. And still missed a big pile
Here's a link: http://www.amazon.com/Universal-Leaf-Gulper-Pool-Vacuum/dp/B002WKO8OK
Below I am posting pics of my swamp recovery. I'd hired pool guys to recover my foreclosure swamp and they literally could not get it done. I stopped them after 700 worth of labor and did it myself in 12 days (9 days once I had my test kit) and 60 gallons of cheap beach.
The brown pic is pretty much where they left off. The next pics are all me, TFP following a slam and using the leaf gulper to get leaves off the bottom:
Hope this helps you feel comfortable that the slam is a proven and superior method.
Cheers to clear!
View attachment 36874
http://www.troublefreepool.com/threads/34135-Testing-the-strength-of-12-5-chlorine
This is the only thing I can think of.
Lets go back to basics okay?
-Where do you get your bleach/chlorine from?
-What is the date code on it?
-Is there anything like a light or ladder that could be hiding algae?
-Have you opened your filter to look at the sand?
How often are you testing for FC?
Kim
^+1 on that.
First, get the debris out and keep dosing it so that it does not get below 20 at all for any period of time.
Watch for clarity. Once you can see the bottom, if in fact your well has high iron or something, there is something you can do to sequester it, but it won't work right at high FC/Slam levels so yo would need to wait until you pass the slam criteria of overnight FC loss, ccs and clarity. In the mean time a sand filter will also to some extent clear any oxidized metals.
How do you normally fill your pool?
Also, is your filter pressure rising often, and are you backwashing it when its about 25% or so over clean pressure?
Its at 50 and yes it was zero according to the test strips....that's all I had last weekGo ahead and re-check your CYA. Was it at 0 when you added CYA last week?