I have a 13,500 gallon above ground pool. We use 1 inch bromine tabs and weekly shock from pool logic. I don't have a test kit yet, but my question is can I use bleach as a shock. I understand that to convert to a chlorine pool I probably need to drain. We have had a horrible algae problem that shock seems to clear up, but I would like to use the TFP method. Don't want to drain the pool and i guess the bromine tabs are fine to use but the bleach and ph method would be easier.