Dealing with scale problem

[beaverplt]

Hi, I have some clarifier that mentions longer chlorine life as a benefit. I wrongly assumed the similar benefit made it the same as stabilizer. I didn't use it anyway, so no harm. My CYA still is low a week after adding stabilizer. I added 4 more lbs today, which, according to the chart is supposed to raise it about 10ppm. I guess only time will tell. I tested PH and chlorine this morning. PH was 7.2 and chlorine was 5 ppm. I'm going to give the stabilizer a couple of days to work before adding any more chlorine. We're supposed to stay cool and cloudy over the next few days, so I think waiting will be ok although I will test daily. When my CYA looks better, I'll deal with the algae problem.

[Watermom]

If you stop adding chlorine, your algae will take over even more than it already is! You don't want that. You need to be adding chlorine daily up to shock levels! Don't stop and let the algae get even worse!

[beaverplt]

I'm so glad I read your posts about adding chlorine this morning. I was at 5 ppm this morning and added enough "shock" to bring it up to the shock level in Watermom's chart. (If my math was right I added 8 PPM with 2 gallons of 12% chlorine) The forecast was for mostly cloudy and cool so I thought I would not lose too much over the course of the day. As often happens, it was a gorgeous sunny day and most or all of what I added is gone. Using the color chart I'm somewhere between 6 and 9 ppm as of now. I added more immediately. The good news is I can see some progress with the algae.
I should probably have mentioned that last year, we had a terrible problem with scale after "topping off" our water level in spring with hard water. Our iron filter had clogged and I had to bypass it. I thought I could deal with the consequences in the pool in time, but suddenly found myself working 90 or so hrs a week. To make a long story short, we spent most of the summer working to soften and remove it. Some of that scale is still on the liner and is giving the algae a great place to root itself.
Lastly, I wish I had found this forum before I bought a large supply of shock. Our local Ace hardware always gives a good price on larger amounts in spring so I have always loaded up. It's a good price for "shock", but still more expensive than regular bleach.
Thanks so much for the help. You can bet I'll be referring back to the forum often.