Algae spots?

[IamWebb223]

I've noticed a couple spots on my liner on the bottom of my pool that are turning green :/. My chlorine is between 5-10, ph - 7.5 and my CYA is 50. Any advice. Im close to closing the pool up and don't want this to create a bigger problem next year. Any advice appreciated. Thanks!!!

PS - i've just been putting in diver dave to cure the problem but they keep coming back.

 

[tim5055]

You pool cleaner is not the solution to visible algae, a SLAM is. I would guess at some point you got below the recommended level of FC or your CYA is higher than you think.

You should read the directions on SLAMing your pool in the How To section of Pool School and follow that procedure completely to the end.

 

[pwrstrk]

Any visible algae you need to follow the SLAM Process. Follow it to the T and it should go quickly.
The reason for it could be poor circulation in that spot or your FC level dipped below your min for your CYA level which is 4. You got the right test kit so SLAM it ?

 

[IamWebb223]

My FC s 10 and my CC is zero. Still having a couple algae spots coming in. Do i need to just keep adding chlorine? I added over 400 oz of bleach like the chart said. Did i add it all too soon? Or not enough? Help!!!!!!