Added m/a this morning around 8:30 est. Put in a little more than half gallon as it was hard to judge. At 11:30 est ph is now 7.2 and ch is 1. My timer shut the filter from 10pm to 7 am so that didn't help. Have it 24/7 now. With so much crud on the bottom yesterday I vac'd with the filter on waste. I have it on normal filter now and vac'd just where I could see. When doing so I noticed one of the water returns spitting out green sediment, so I've stopped the vacuuming for now.

What's next?