i dont know why but the Phosphate keep reading high. in the pass week i 3 50% water changes. i use ROWAphos in my reactor and i use Chemi Pure Elite in my fillter. my ro water reads .07 and my made salt water read .03. no sand bed. the tank is 29 . i use a Tom Rapids Pro Series Rp3 Plus Canister Filter. dont know how my Phosphate r .32 and .22. can it be my dry rock some of it is carb sea base rock. do i have to break it all down?? plz help.