Thanks for the responses. No, I have not ordered the test kit, but will today. Pressure rise takes about 2-3 hours. I do spray the filter wings with a chlorine solution after spraying down each time too. So, I'll order the test kit, and post some results before I refill the dark green monster. I want to find an affordable Kreepy Krauly first too, so I'll try to order that today as well.
Previously (btw we live in San Diego) I was testing and chlorinating from pool store stock about twice a week. Someone said that Home Depot chlorine might be old having sat on the shelf, and less effective. I like the idea of supermarket shopping though. pH would fall after 2-3 days too, so I added ph up. Really no swimmers using the pool either.