I'm a new pool owner and wondering if my slippery liner is normal or something else. Almost 2 weeks ago I adjusted pH by adding borax and thought maybe the slippery feeling was due to that, but it hasn't gone away. The feeling is the same on the sides or the bottom. The liner appears to be clean, the slipperiness doesn't rub off, so I don't think there's anything growing on it. Water is very clear. Here's the data from TF100:
Cu 0.3 (from pool store test, algaecide with Cu was added at opening)
I figure I need to shock the system to kill off the CC and raise the FC a bit. Any other advice?