Well, it has been 5 days and what a journey - The sand filter was dropping pressure off and on, and we kept adding a little bit of DE to stabilize, but it just kept happening. Finally, I just decided to call a pool service company since I myself could not get down there to check the pumps. The technician discovered that the o-ring on my filter pump was bad as well as the flapper on the Pentair pool main drain. He replaced both items on Thursday and everything went back to normal operating PSI - 20. As a side note, if you run your fingers around your o-ring and you get black on your fingers, go ahead and spend the $4.00 to replace it as well as save time and headaches.

We were/are pretty confident that all the algae was/is dead but with the irregular pressure nothing was being filtered out and we had out of town guests coming and staying with us for the Memorial day weekend. It is Austin, TX so 93 degrees and a dirty pool are not a good thing. So Thursday afternoon we added borax and let the filter run for 4 hours to raise our Ph to 8.2 Then we set to the filter to recirculate and added 8lb's of Floc and let it run for 6 hours and turned it off. The next afternoon the floc had done it's job, the pool had a white powder on the bottom and the water was clear. It took about an hour and fifteen minutes to vacuum to waste all the powder but the pool looks awesome now. I can send before and after pictures if you like.

Additioanlly, We got our Taylor test kit on Friday, so it took about 7 days from order to delivery. If you are newto the BBB method like me, the kit can be intimidating when you first open it but I think we did it right. Here are our current levels:
FC: 5.4
CC: 0.4
Ph: 7.8
Alk 110
CYA: 100

Should I raise my Chlorine up a bit to the 7.0 to 8.0 mark because the CYA is so high? I also assume I should turn my in-line chlorinator off, because I my 3" puck's that are adding more CYA? The pucks are Trichloro-s-triazinetrione 99% and Other ingredients 1%.

I hope to not visit the pool store the rest of the summer if I can help it at all!

Thanks again for all of your help and advice!

Travis