OK,

First, thanks for the replies. My free CL level seems to range between 3 to 5 ppm, mostly at 5. I test everytime for combined chlorine, and the Taylor kit says it is negligible. After adding the third set of drops I really can't see any difference. Also, we simply have not used the pool (once swimming in the pool, 4-5 times in the spa max.)

My pool and spa ARE plumbed together, that may have been a reading error on my part. After adding 40 drops on the second test I could've miscounted. Also your temp/curing theory is very likely too. I was concerned as the test kit said to look for a smaller ppm level. Maybe that only refers to a spa only system?

I will first slowly add two cups/lbs of baking soda at a time, with a target Total Alkalinity of 80ppm. I can handle keeping that PH level between 7.3-7.6. It is OK to add 1 gallon of Muriatic at a time right, or should I use the calculator to be more precise?

CYA- I used the powder once awhile back to bring it up from 30ppm after I'd heard the SWG preferred levels are higher. I put it in an old sock and floated it in the skimmer, leaving it in there about 5-7 days until it disolved. I understand the dangers of not letting the CYA get too high and have no desire to drain my pool. I'll recheck what Hayward recommends and shoot for the low end, 1/4 to 1/3 dose at a time.

I feel the chlorine smell is very faint, not overly strong. With our limited use so far, is it possible I need to shock? I've heard that combined chlorine mainly comes from sweat, suntan oils, bodily fluids etc. If so, should I use bleach or another brand liquid cholrine? I've already ruled out using the SWG.

Lastly, I've already had to add hose water twice since January to compensate for evaporation. It gets hot here in Texas quick. I'd hate to pump water out. Are you saying the best way to bring down the Calcium Hardness is to pump water out after hard rains? Right now my level is up about two to three inches from recent days rains.

Again, thanks to all. I'm getting the hang of this quick.


Mike
Arlington, TX