Long story short we bought a house that has an Intex Ultraframe pool. Looks to be in pretty good condition (no evident leaks) but there's is an algae problem. Previous owners said the water was thick with algae and they started the shock process but as you can see there's no chlorine anymore. The water is a cloudy green but when I took the water sample it was very clear with a hint of brown color.
We're just guessing that there's roughly 10,500 gallons in the pool as it was partially drained but it's been raining like crazy here for the last 3 or 4 weeks and the pool is almost full again. I've replaced the crappy cartridge filter with a 2650 sand filter. I have some DE but haven't added it yet. There is a SWG but it's not currently hooked up. What do y'all recommend to fix or do before I start the shock process? Thanks!!
TF-100 test kit readings are: