Thanks for all of the advice... Had my PH creep up above 7.8... not quite to the 8.4 on my test kit, but somewhere in between the 7.8 and 8.4. Added about 3 oz of dissolved PH Minus that we had on hand yesterday, and today the chlorine has held steady at 3 and the PH was back to about a 7.6. I'm guessing it's due to high aeration, as our kids plus the neighborhood kids have spent at least 4-6 hours a day splashing around in the pool. And the pump return into the pool really ripples the water since we don't have the pool filled to capacity. (And rain two nights in a row)

Anyway... I pulled out all the chemicals we've purchased/been given over the years and was curious if any of the following are worth keeping around?

* HTH PH Minus (I understand Muratic Acid is the chem of choice, but we already had this on hand)

* HTH Dual Action 1" chlorinating tablets (active ingred. trichloro-s-triazinetrione 93.5% and copper sulfate pentahydrate 1.5%... avail chlorine 84%)
* SpaGuard PH Decreaser (sodium bisulfate 93.2%)

And the jug of "HTH Algaeguard" is definitely getting tossed.

How do you dispose of unwanted pool chemicals? Are they safe to dump, or best taken to the hazardous waste facility?

Thanks!

Intex 16'x48" UltraFrame, approx 5000 gal