spikeamania

My chlorine level was at 1 last night and my ph was at 8. I have an above ground pool and I am using chlorine tablets in a dispenser that floats around the pool. I checked my filter today and it was a rusty brown. I was only running the pump about 5 hours a day like the manual suggested. I am guessing I should be running it longer. The puck dispenser looks like it has a scum line on it. That's the most I can think of now

I am new to this got my first pool this year, filled it up put in my chlorine and put on my solar cover. 2 days later the wind is strong blows off my cover to reveal a nice green colored water. My chlorine level is where it should be but my ph level is high. What can I do to get things cleared up