- Joined
- Nov 11, 2011
- Messages
- 132
- Reaction score
- 93
- Location
- North Carolina
- What state or country do you live in
- North Carolina
If you detect PO4 when doing your water tests and you know that the source is the sand bed and the rock. If you removed the sand bed and removed the rocks..........would the remaining water still contain PO4??


