Hello, new to the board with a question about Intex test strips. We recently bought the 32' x 16' x 52" ultra frame pool from Intex and love it. We have the salwater system and 4000 gallon filter. Anyway we got the test strips that came with the pool, the three way version. They measure Free chlorine, ph and total alkalinity. Anyway, the chlorine test range goes from a light tan to a dark green, with varying shades of green in between. However when i do the test it comes back brown/red. i don't know if that means i'm too low or too high. Any ideas? Thanks!