Yes, vacuum up the brown stuff. You can vacuum to waste if there's a lot of it and if you have a DE or sand filter (and you may be able to if you have a cartidge filter). Look for a waste setting on the mulitport valve on the side or top of your filter.
You need to determine the level of Cyanuric Acid (CYA aka stabilizer) in your water. Once you've done that Ben's Best Guess Table(http://www.poolforum.com/pf2/showthread.php?t=365) will tell you how much free chlorine you need to keep in the water.
Your alkalinity is a little high but may be OK dependent on the type of pool you have (vinyl or above ground probably ok, gunite/plaster you will probably want to lower it)
Your calcium hardness is low. You'll need to raise it if you have a gunite pool but you probably don't need to do anything for it if you have vinyl.
Bookmarks