I just bought some Revive from the pool company that built my pool. Vinyl liner with 50 K gallons. Last June we had flooding and my pool kept overflowing with rain water. Could not get it started up with chemicals as usually do as they kept washing out with rain. Then I went to Puerto Rico for a week for a wedding and left 2 floaters as pump was turned off and safety cover installed. It kept raining and I was gone an additional 1 1/2 weeks due to death in family. I had a carpet of algae on the bottom and on the cover. Sigh. So I vacuumed out algae to waste until the water got too low, then hit it with algaecide and chlorine. I got it cleaned up but since then I can't keep it balanced or clear. 5 way HTH kit shows TA at 160-200 and PH at 6.8. I use muriatic acid to lower TA and soda ash to raise PH, but then the TA goes back up. I read the articles and am aereating pool now to see if I can raise PH w/o soda ash. The pool co had no suggestions other than Revive. I am at 7.2 and 195 TA right now. I can only see own about 5 ft in 10 ft deep end. Went thru 100 lbs dichlor in last month in addition to useing 2 floaters and an auto feeder. Any suggestions would be appreciated.