I used Baquacil last year in my 24x52 above ground pool. This year I am switching to chlorine. I used nothing to winterize the pool just shut it down. Today I got my shock in from In the Swim. I tested the water with the test I recieved today and this is the numbers.

Total Hardness: 1000
Total Chlorine: 0.5
Free Chlorine: .05
Ph. 6.8
Alk. 80 Acid 0

I added 1 super shock and 2 pounds of ph increaser today. The in the swim website suggested. My pool was swamp green now it is a greenish brown with a white residue on the top. Is this normal and what do I do next?