Hi Oscar,
Ok, not as bad as it could be. Its workable.
pH is OK for now, TA is OK, CYA his higher than we like but its workable.
You need to SLAM the Pool. What that means is raise the FC to what we call SLAM (similar to shock), but only using liquid chlorine (a.k.a. bleach). Using any other form of stabilized chlorine will make your CYA get even higher, and that is not what you need.
The more often you can test, meaning multiple times a day, and replenish the chlorine, the quicker it will go. The first couple or 3 days are the most important.
You also need to brush the pool daily. Get that algae stirred up so the chlorine can get to it and kill it. If you dont brush, its gonna take a lot longer to kill it all.
With your CYA level of 70, your SLAM FC level is 28.
Do all you can to not let the FC drop below 28.
So, you need to raise your FC to 28, or slightly above, and MAINTAIN that FC level until
no more visible algae.
your CC is .5 or less
you pass the overnight chlorine loss test.
Do you know how to use pool math? This and your test kit will be your best friend.
http://www.troublefreepool.com/calc.html
top left, enter your 30K gallons
In the FC row - box on left, enter your FC test result
The box to the righ of that, enter your "goal", in your case, 28.
then click the calculate button. (no need to do any of the other parameters until you get your algae taken care of.).
Getting rid of the algae is a process, not a 1 time thing. It might take a week or longer to get you fixed up, but if you stay with it, you will get rid of the algae and have the clearest water you've ever had.
Just got my kit UPS ground. Came pretty quick. Only order it Friday.
Okay. Here is where I stand. Pool is cloudy but I can see the bottom in low end can't make out the bottom on Deep end. There is yellow brown algae on the bottom of the pool going down to deep were I can see. I vacuumed up the low end Sunday. Any help greatly appreciated. Haven't been able to use pool for last 5-6 weeks. Some numbers:
PH-7.2
FC-13
Total Alkalinity-60
CYA-70