Yes, alk of 210 needs dropped. We have a "how to" for lowering alk at this link:

http://www.poolforum.com/pf2/showthread.php?t=191

Also, read this sticky about stain removal:

http://www.poolforum.com/pf2/showthread.php?t=7923

Read these and see if they help. Really glad the excessive chlorine demand is over. Now time to enjoy the pool!