I'm brand new to the group. This is my 3rd year with my pool and I'm still learning. I've been taking my water to the pool company and using their test methods which is usually very helpful but it's time for me to learn to take care of this myself. I ordered the TF100 kit today but I've been on vacation and returned to a very green pool. My dad had taken a water sample to the pool company 2 days before I came home. The CYA was 90 at that point but nothing was said to him about dumping any water but sold him 40.00 worth of chemicals. He also used an additional 6 pounds of shock only to have no results as you can understand and I do too now that I'm learning. So I took another water sample yesterday to them and the CYA was now 110. I was told to dump half which I did and got it down to 54. I was told to put 5 lbs of shock in and the water would be blue (not clear) by today but guess what, it's not. It's now a light green. I'm learning 54 is still too high so I'm dumping a little more today, just under the skimmer. I'm out of shock and I'm wodering, can I use standard bleach ( Sodium Hypochorite) until my kit comes in and the company opens tomorrow to test my water again? Or is there something about the sodium. Last known ph was 6.5 but I added 12 pounds yesterday. Can't get a reading today since they're closed.