Hi all - I installed a new pool myself last May, an 18x36 vinyl liner 3ft shallow and 8ft deepend, and went overboard on the 3" Cl2 pucks. A few weeks ago my CYA level was around 150 and when I tried to drainoff the pool to replace the water my liner started to freakout and bulge and wrinkle everywhere. I only got about 1-1.5ft replaced and quickly had to start filling it and stick a vac behind the liner at one of the skimmers. So now my CYA is around 120 and wondering two things. How do I replace the water without this happening again? And, how do I get the wrinkles out that occurred the previous time?