I have shocked my outdoor pool and it took 4 days to get it from algae green to crystal clear.
the methods were recommended by TFP ( meeting the 3 criterias etc..)
What i know...
1) using the pool calculator.
2) CL, pH, TA, CH, MA, CYA Langelier index.
3) Stabilized Chlor: Triclor 95%, Diclor...