Aeration / Acid Treatment to lower Alk

[Yeggim]

I am looking to drop the CYA and raise the Chlorine. Pool level is currently down 3 inches from evaporation for cleaning of the water line. I figure I will need to drain some water before I refill. I have already removed the chlorine tablet floater. I am getting some liquid Chlorine tomorrow to raise the chlorine to a solid 3-4 or may use some Calcium Hydro if the TA drops as I have stopped adding Acid.

Any other tips are appreciated.

Calcium Hydro? Do you mean Calcium Hypochlorite? I don't know if you're linking Calcium Hypochlorite and TA but I'm pretty sure that Calcium doesn't affect TA. If you already have some Calhypo, it's alright to use as a Chlorine source. I wouldn't go out and buy it. You already have a CH of 200. A little more probably won't hurt if your fill water is good but there's no need for it in a fiberglass or vinyl pool.

After further reading it looks like some Calcium is recommended for fiberglass pools to protect the gel coat and keep cobalt from leeching from the gel coat.