How to Aerate for high alkalinity?

[michladny]

I was reading these posts and I was wondering.....

My Alk was a little high yesterday (and I would rather add small amounts to keep my water in check than have to worry about adding large quantities of stuff)...but anyway,

Can't you just add it slowly to the skimmer or do you have to sprinkle over pool water? I am so DUH (but slowly learning from you all ) I should NOT add anything to PH (as the acid will decrease it--correct? Is that temporary(the decrease in pH?)
My return "eyeball" is pretty close to the top and ripples the water so do I still need to add a jet or "gadget" to aerate?
How much does the pool store charge for Alk decreaser?
I have an AG vinyl -- 16000 gal

Thanks !!

Michelle