Well, I ended up only replacing about 1/2 of the water due to a number of factors. After I ran out of bags the water level dropped down to the point that I could no longer siphon. While I could have gotten around this, the big kicker was my son is turning 4 today and when given a bunch of special things he could do for the day, all he wanted was to go swimming. You can't disappoint a little guy on his birthday so I quit draining and topped it off.

While I'm sure my levels didn't get down to where I wanted them (will test everything as soon as I get home this morning) It should be better and I know the water will be cooler, the yard also got a much needed watering (it was so dry not an ounce ran out of the yard)...... and y'all got some entertainment from my redneck engineering.

Thanks for all the help.