We just bought this house with a pool and have little experience with maintaining a pool. It is a very old pool (early 70's) all plaster. I bought a test kit yesterday, not a great one, but it was the best they had in the store and I figured it was better than trying to use the crappy strips. I tested and our water and it is a mess. I have 2 questions to begin.

1. When I do the FC test, how long do I wait to read the results. When I first add the second set of drops and mix, it came out as a 1 ppm, but after a minute it darkened up to about 3 ppm, so which is correct?

2. Where do I start? Here are my results

FC: 1 ppm (or 3 ppm, depending on how I was supposed to read the test)
TC: 5+
pH: 6.8 ~ maybe 7.0
TA: 310 ppm

I tried to do the Acid Demand test, but I added 30 drops without any change and I finally gave up

Help!